id int64 | problem_number string | title string | statement string | plain_statement string | specialist_statement string | background string | category dict | secondary_categories list | difficulty dict | status string | consensus_state string | status_confidence float64 | primary_question_type string | question_types list | chemical_entities list | chemical_processes list | reaction_classes list | phases_and_media list | regimes list | conditions dict | scales list | why_open string | what_would_settle_it string | resolution_modes list | investigation_modes list | evidence_state list | source_type string | source_support_level string | source_url string | source_citation string | source_identifiers dict | source_license string | reuse_mode string | sets list | tags list | year_proposed int64 | proposed_by list | statement_status string | literature_checked_at timestamp[s] | research_classification string | duplicate_of string | archive_reason string | is_gold_seed bool | published bool | created_at timestamp[s] | updated_at timestamp[s] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | UCHEM-000001 | Molecular interactions determining the transfer of chirality | What are the molecular interactions determining the transfer of chirality? | When controlling three-dimensional stereochemistry in transfer of chirality (organic mechanisms and synthesis science), what chiral induction factors answer: What are the molecular interactions determining the transfer of chirality? | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for transfer of chirality), what are the molecular interactions determining the transfer of chirality? | Context from Communications Chemistry (2021): The geometries and energies of TSs that lead to competing products are defined by noncovalent interactions (NCIs) which are expressed in several different forms (CH−π, π−π, electrostatic, etc.) and are energetically weak (the energy increments associated with these interact... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 5,
"level": 5,
"name": "L5: Foundational or Grand"
} | open | established_open_question | 0.95 | stereocontrol | [
"stereocontrol",
"bonding",
"mechanism",
"selectivity"
] | [
{
"name": "chemical system in transfer of chirality",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "urea / hydrogen-bonding motif (CH4N2O)",
"role": "central_system",
... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Jolene P Reid (2021) in Communications Chemistry: "The geometries and energies of TSs that lead to competing products are defined by noncovalent interactions (NCIs) which are expressed in several different forms (CH−π, π−π, electrostatic, etc.) and are energetically weak (the energy increments associat... | Direct kinetics, isotopic labeling of transfer of chirality under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | open_questions_commentary | explicit_question | https://doi.org/10.1038/s42004-021-00614-y | Jolene P Reid (2021), "Open questions on the transfer of chirality", Communications Chemistry, doi:10.1038/s42004-021-00614-y | {
"source_id": "SRC-CHEM-00013",
"doi": "10.1038/s42004-021-00614-y",
"pmid": "36697611",
"pmcid": "PMC9814639"
} | CC BY 4.0 | verbatim_allowed | [
{
"id": 1,
"name": "comm_chem_open_questions",
"display_name": "Communications Chemistry — Open Questions in Chemistry",
"slug": "comm-chem-open-questions"
},
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
... | [
"organic_mechanisms_and_synthesis_science",
"stereocontrol",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,021 | [
"Jolene P Reid"
] | exact | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
2 | UCHEM-000002 | Driving forces that pivot a polypeptide chain to a specific conformation | What are the driving forces that pivot a polypeptide chain to a specific conformation amongst the vast conformation space? | For Structural determinants of protein folding (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What are the driving forces that pivot a polypeptide chain to a specific conformation amongst the vast conformation space? | With respect to bond formation, bond cleavage in surface reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Structural determinants of protein folding), what are the driving forces that pivot a polypeptide chain to a specific conformation amongst the vast conformati... | Context from Cellular and Molecular Life Sciences : CMLS (2009): The last several decades have seen an explosion of knowledge in the field of structural biology. With critical advances in spectroscopic techniques in examining structures of biomacromolecules, in maturation of molecular biology techniques, as well as vas... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | conformation | [
"conformation",
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Structural determinants of protein folding",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "N,N-dimethylformamide / amide (C3H7NO)",
"role": "... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"surface",
"biological_milieu",
"solution"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "surface reaction medium",
"excitation_or_stimul... | [
"electronic",
"atomic",
"molecular"
] | As documented by Kang TS, Kini RM (2009) in Cellular and Molecular Life Sciences : CMLS: "The last several decades have seen an explosion of knowledge in the field of structural biology. With critical advances in spectroscopic techniques in examining structures of biomacromolecules, in maturation of molecular biology t... | Direct kinetics, isotopic labeling of Structural determinants of protein folding under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_question | https://doi.org/10.1007/s00018-009-0023-5 | Kang TS, Kini RM (2009), "Structural determinants of protein folding", Cellular and Molecular Life Sciences : CMLS, doi:10.1007/s00018-009-0023-5 | {
"source_id": "SRC-CHEM-00014",
"doi": "10.1007/s00018-009-0023-5",
"pmid": "19367367",
"pmcid": "PMC11115868"
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
}
] | [
"organic_mechanisms_and_synthesis_science",
"conformation",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,009 | [
"Kang TS",
"Kini RM"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
3 | UCHEM-000003 | After the ribosome structures | Do any components of the site enhance the rate of peptide-bond formation chemically? | For After the ribosome structures (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: Do any components of the site enhance the rate of peptide-bond formation chemically? | With respect to bond formation, bond cleavage in solid-state lattice or crystalline solid interface (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for After the ribosome structures), do any components of the site enhance the rate of peptide-bond formation chemically? | Context from RNA (2003): Atomic resolution crystal structures of the large subunit published since the middle of August 2000 prove that the peptidyl transferase center of the ribosome, which is the site of peptide-bond formation, is composed entirely of RNA; the ribosome is a ribozyme. They also demonstrate that alignm... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | structure | [
"structure",
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in After the ribosome structures",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "N,N-dimethylformamide / amide (C3H7NO)",
"role": "solvent_or_me... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"crystalline_solid",
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solid-state lattice or crystalline solid inter... | [
"electronic",
"atomic",
"molecular"
] | As documented by Moore PB, Steitz TA (2003) in RNA: "Atomic resolution crystal structures of the large subunit published since the middle of August 2000 prove that the peptidyl transferase center of the ribosome, which is the site of peptide-bond formation, is composed entirely of RNA; the ribosome is a ribozyme. They ... | Direct kinetics, isotopic labeling of After the ribosome structures under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_question | https://doi.org/10.1261/rna.2127103 | Moore PB, Steitz TA (2003), "After the ribosome structures: how does peptidyl transferase work?", RNA, doi:10.1261/rna.2127103 | {
"source_id": "SRC-CHEM-00015",
"doi": "10.1261/rna.2127103",
"pmid": "12554855",
"pmcid": "PMC1370378"
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
}
] | [
"organic_mechanisms_and_synthesis_science",
"structure",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,003 | [
"Moore PB",
"Steitz TA"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
4 | UCHEM-000004 | Capability of Oxidovanadium(IV) Derivatives to Act as All-Around Catalytic Promoters | What functions could vanadium or its very stable oxidovanadium(IV) derivatives have had in the prebiotic world and in the origins of life in Capability of Oxidovanadium(IV) Derivatives to Act as All-Around Catalytic Promoters? | For Capability of Oxidovanadium(IV) Derivatives to Act as All-Around Catalytic Promoters (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What functions could vanadium or its very stable oxidovanadium(IV) derivatives have had in the prebiotic wo... | With respect to network emergence, bond formation in aqueous solution or buffered electrolyte (H2O) (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Capability of Oxidovanadium(IV) Derivatives to Act as All-Around Catalytic Promoters), what functions could vanadium or its very... | Context from Molecules (2020): For a long time the biological role of vanadium was not known, while now the possibility of using its derivatives as potential therapeutic agents has given rise to investigations on their probable side effects. Vanadium compounds may inhibit different biochemical processes and lead to a v... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | emergence | [
"emergence",
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Capability of Oxidovanadium(IV) Derivatives to Act as All-Around Catalytic Promoters",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "adenosine mo... | [
"network_emergence",
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"biological",
"ambient"
] | {
"temperature": "physiological temperature (310 K / 37 °C)",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "aqueous solution or buffered electrolyte (H2O)",
"excitation_or_stimulus": "ther... | [
"electronic",
"atomic",
"molecular"
] | As documented by Campitelli P, Crucianelli M (2020) in Molecules: "For a long time the biological role of vanadium was not known, while now the possibility of using its derivatives as potential therapeutic agents has given rise to investigations on their probable side effects. Vanadium compounds may inhibit different b... | Direct kinetics, isotopic labeling of Capability of Oxidovanadium(IV) Derivatives to Act under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_question | https://doi.org/10.3390/molecules25133073 | Campitelli P, Crucianelli M (2020), "On the Capability of Oxidovanadium(IV) Derivatives to Act as All-Around Catalytic Promoters Since the Prebiotic World", Molecules, doi:10.3390/molecules25133073 | {
"source_id": "SRC-CHEM-00016",
"doi": "10.3390/molecules25133073",
"pmid": "32640541",
"pmcid": "PMC7412518"
} | cc by | verbatim_allowed | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
},
{
"id": 12,
"name": "open_access_chemical_review_corpus",
"display_name": "Open-Access Chemical Review & Perspect... | [
"organic_mechanisms_and_synthesis_science",
"emergence",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,020 | [
"Campitelli P",
"Crucianelli M"
] | exact | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
5 | UCHEM-000005 | Chemistry of Spiroindolenines by Mechanistically-Driven Reaction Development | Can the spiroindolenine species be formed effectively under Pictet-Spengler conditions? | When controlling three-dimensional stereochemistry in Chemistry of Spiroindolenines by Mechanistically-Driven Reaction Development (organic mechanisms and synthesis science), what chiral induction factors answer: Can the spiroindolenine species be formed effectively under Pictet-Spengler conditions? | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Chemistry of Spiroindolenines by Mechanistically-Driven Reaction Development), can the spiroindolenine species be formed effectively under Pictet-Spengler co... | Context from Accounts of Chemical Research (2020): The Pictet-Spengler reaction is a fundamental named reaction in organic chemistry, and it is the most straightforward method for the synthesis of tetrahydro-β-carbolines, a core structure embedded in numerous alkaloids. Spiroindolenines are often proposed as possible i... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | stereocontrol | [
"stereocontrol",
"mechanism",
"selectivity"
] | [
{
"name": "chemical system in Chemistry of Spiroindolenines by Mechanistically-Driven Reaction Development",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "tetrahydrofuran (THF... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Zheng C, You SL (2020) in Accounts of Chemical Research: "The Pictet-Spengler reaction is a fundamental named reaction in organic chemistry, and it is the most straightforward method for the synthesis of tetrahydro-β-carbolines, a core structure embedded in numerous alkaloids. Spiroindolenines are ofte... | Direct kinetics, isotopic labeling of Chemistry of Spiroindolenines by Mechanistically-Driven Reaction Development under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_question | https://doi.org/10.1021/acs.accounts.0c00074 | Zheng C, You SL (2020), "Exploring the Chemistry of Spiroindolenines by Mechanistically-Driven Reaction Development: Asymmetric Pictet-Spengler-type Reactions and Beyond", Accounts of Chemical Research, doi:10.1021/acs.accounts.0c00074 | {
"source_id": "SRC-CHEM-00017",
"doi": "10.1021/acs.accounts.0c00074",
"pmid": "32275392",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
}
] | [
"organic_mechanisms_and_synthesis_science",
"stereocontrol",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,020 | [
"Zheng C",
"You SL"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
6 | UCHEM-000006 | Kynurenic Acid Strategies for Next-Generation Therapeutics via Rational Drug Design | What causes minor structural alterations to induce significant changes in disease outcomes? | For Kynurenic Acid Strategies for Next-Generation Therapeutics via Rational Drug (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What causes minor structural alterations to induce significant changes in disease outcomes? | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Kynurenic Acid Strategies for Next-Generation Therapeutics via Rational Drug), what causes minor structural alterations to induce significant changes in dise... | Context from Pharmaceuticals (2025): Background Quinoline-derived metabolites exhibit notable chemical complexity. What causes minor structural alterations to induce significant changes in disease outcomes? Historically, eclipsed by more straightforward scaffolds, these chemicals serve as a dynamic hub in tryptophan me... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Kynurenic Acid Strategies for Next-Generation Therapeutics via Rational Drug Design",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "acetic acid /... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Tanaka M, Szatmári I, Vécsei L (2025) in Pharmaceuticals: "Background Quinoline-derived metabolites exhibit notable chemical complexity. What causes minor structural alterations to induce significant changes in disease outcomes?" Resolving this mechanism question is challenged by competing bond formati... | Direct kinetics, isotopic labeling of Kynurenic Acid Strategies for Next-Generation Therapeutics under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_question | https://doi.org/10.3390/ph18050607 | Tanaka M, Szatmári I, Vécsei L (2025), "Quinoline Quest: Kynurenic Acid Strategies for Next-Generation Therapeutics via Rational Drug Design", Pharmaceuticals, doi:10.3390/ph18050607 | {
"source_id": "SRC-CHEM-00018",
"doi": "10.3390/ph18050607",
"pmid": "40430428",
"pmcid": "PMC12114834"
} | cc by | verbatim_allowed | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
},
{
"id": 12,
"name": "open_access_chemical_review_corpus",
"display_name": "Open-Access Chemical Review & Perspect... | [
"organic_mechanisms_and_synthesis_science",
"mechanism",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,025 | [
"Tanaka M",
"Szatmári I",
"Vécsei L"
] | exact | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
7 | UCHEM-000007 | Mechanism of Anomeric effect, hyperconjugation and electro | Why are such questions inherently controversial in Anomeric effect, hyperconjugation and electrostatics? | For Anomeric effect, hyperconjugation and electrostatics (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: Why are such questions inherently controversial in Anomeric effect, hyperconjugation and electrostatics? | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Anomeric effect, hyperconjugation and electrostatics), why are such questions inherently controversial in Anomeric effect, hyperconjugation and electrostatic... | Context from Chemical Society Reviews (2021): Understanding the interplay of multiple components (steric, electrostatic, stereoelectronic, dispersive, etc. ) that define the overall energy, structure, and reactivity of organic molecules can be a daunting task. The task becomes even more difficult when multiple approach... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
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} | open | active_debate | 0.92 | conformation | [
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{
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8 | UCHEM-000008 | Mechanism of Psychrophily and catalysis | How do these organisms compensate for the exponential decrease of reaction rate when temperature is lowered in Psychrophily and catalysis? | For Psychrophily and catalysis (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: How do these organisms compensate for the exponential decrease of reaction rate when temperature is lowered in Psychrophily and catalysis? | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Psychrophily and catalysis), how do these organisms compensate for the exponential decrease of reaction rate when temperature is lowered in Psychrop... | Context from Biology (2013): Polar and other low temperature environments are characterized by a low content in energy and this factor has a strong incidence on living organisms which populate these rather common habitats. Indeed, low temperatures have a negative effect on ectothermic populations since they can affect ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
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"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Gerday C (2013) in Biology: "Polar and other low temperature environments are characterized by a low content in energy and this factor has a strong incidence on living organisms which populate these rather common habitats. Indeed, low temperatures have a negative effect on ectothermic populations since... | Direct kinetics, isotopic labeling of Psychrophily and catalysis under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
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] | review_article | explicit_question | https://doi.org/10.3390/biology2020719 | Gerday C (2013), "Psychrophily and catalysis", Biology, doi:10.3390/biology2020719 | {
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"doi": "10.3390/biology2020719",
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9 | UCHEM-000009 | Conformational selection or induced fit? 50 years of debate resolved | Do the different conformations involved already exist spontaneously in the absence of the regulatory ligands (Monod-Wyman-Changeux), such that the complementary protein conformation would be selected to mediate signal transduction, or do particular ligands induce the receptor to adopt the conformation best suited to th... | During catalytic or functional operation of Conformational selection or induced fit? 50 years of debate (organic mechanisms and synthesis science), what is the true resting or turnover-limiting active chemical species: Do the different conformations involved already exist spontaneously in the absence of the regulatory ... | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Conformational selection or induced fit? 50 years of debate), do the different conformations involved already exist spontaneously in the absence of ... | Context from F1000 Biology Reports (2011): Exactly 50 years ago, biochemists raised the question of the mechanism of the conformational change that mediates "allosteric" interactions between regulatory sites and biologically active sites in regulatory/receptor proteins. Do the different conformations involved already e... | {
"id": 1,
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{
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"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Changeux JP, Edelstein S (2011) in F1000 Biology Reports: "Exactly 50 years ago, biochemists raised the question of the mechanism of the conformational change that mediates "allosteric" interactions between regulatory sites and biologically active sites in regulatory/receptor proteins. Do the different... | Direct kinetics, isotopic labeling of Conformational selection or induced fit? 50 years under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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10 | UCHEM-000010 | Oxygen reduction reaction is coupled to proton translocation in Structural and functional mechanisms | What is the mechanism by which the oxygen reduction reaction is coupled to proton translocation in Structural and functional mechanisms of cytochrome c oxidase? | For Structural and functional mechanisms of cytochrome c oxidase (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What is the mechanism by which the oxygen reduction reaction is coupled to proton translocation in Structural and functional mechan... | With respect to electron transfer, metabolic or biochemical transformation in solid-state lattice or crystalline solid interface (ultrafast femtosecond/attosecond optical pump-probe laser excitation; probed via kinetics, isotopic labeling for Structural and functional mechanisms of cytochrome c oxidase), what is the me... | Context from Journal of Inorganic Biochemistry (2025): Cytochrome c oxidase (CcO) is the terminal enzyme in the electron transfer chain in mitochondria. It catalyzes the four-electron reduction of O 2 to H 2 O and harnesses the redox energy to drive unidirectional proton translocation against a proton electrochemical g... | {
"id": 1,
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"display_name": "Organic Mechanisms and Synthesis Science",
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"physical_organic_chemistry",
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"id": 5,
"level": 5,
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{
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{
"name": "dioxygen (O2)",
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"ph_or_potential": "applied electrode potential (V vs. RHE / reference electrode)",
"solvent_or_medium": "solid-state lattice or crystalline soli... | [
"electronic",
"atomic",
"molecular"
] | As documented by Rousseau DL, Ishigami I, Yeh SR (2025) in Journal of Inorganic Biochemistry: "Cytochrome c oxidase (CcO) is the terminal enzyme in the electron transfer chain in mitochondria. It catalyzes the four-electron reduction of O 2 to H 2 O and harnesses the redox energy to drive unidirectional proton transloc... | Direct kinetics, isotopic labeling of Structural and functional mechanisms of cytochrome c oxidase under ultrafast conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
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"kinetics",
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11 | UCHEM-000011 | Mechanism of Biosynthesis of Fungal Natural Products Invol | What is the mechanism for this hybridization process in Biosynthesis of Fungal Natural Products Involving Two Separate Pathway Crosstalk? | For Biosynthesis of Fungal Natural Products Involving Two Separate Pathway (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What is the mechanism for this hybridization process in Biosynthesis of Fungal Natural Products Involving Two Separate Pa... | With respect to metabolic or biochemical transformation, bond formation in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Biosynthesis of Fungal Natural Products Involving Two Separate Pathway), what is the mechanism for this hybridization process in Bi... | Context from Journal of Fungi (2022): Fungal natural products (NPs) usually possess complicated structures, exhibit satisfactory bioactivities, and are an outstanding source of drug leads, such as the cholesterol-lowering drug lovastatin and the immunosuppressive drug mycophenolic acid. The fungal NPs biosynthetic gene... | {
"id": 1,
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"display_name": "Organic Mechanisms and Synthesis Science",
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"physical_organic_chemistry",
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"stereochemistry"
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"id": 4,
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} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
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"name": "chemical system in Biosynthesis of Fungal Natural Products Involving Two Separate Pathway Crosstalk",
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"name": "acetic acid / ca... | [
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"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Dai G, Shen Q, Zhang Y et al. (2022) in Journal of Fungi: "Fungal natural products (NPs) usually possess complicated structures, exhibit satisfactory bioactivities, and are an outstanding source of drug leads, such as the cholesterol-lowering drug lovastatin and the immunosuppressive drug mycophenolic ... | Direct kinetics, isotopic labeling of Biosynthesis of Fungal Natural Products Involving Two under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
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12 | UCHEM-000012 | Reaction Mechanism of Mono-ADP-Ribosyltransferase Based on Structures of the Complex of Enzyme | What chemical principles, structures, or elementary steps govern the reaction mechanism? | For Reaction Mechanism of Mono-ADP-Ribosyltransferase Based on Structures of the Complex (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern the reaction mechanism? | With respect to metabolic or biochemical transformation, bond formation in solid-state lattice or crystalline solid interface (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Reaction Mechanism of Mono-ADP-Ribosyltransferase Based on Structures of the Complex), what chemical prin... | Context from Topics in Current Chemistry (2015): Mono-ADP-ribosylation is a post-translational protein modification catalyzed by bacterial toxins and exoenzymes that function as ADP-ribosyltransferases. Despite the importance of this modification, the reaction mechanism remains poorly understood due to a lack of inform... | {
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"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
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"name": "L4: Field-Level"
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{
"name": "chemical system in Reaction Mechanism of Mono-ADP-Ribosyltransferase Based on Structures of the Complex",
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"name": "L-cysteine /... | [
"metabolic_or_biochemical_transformation",
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] | [
"organic mechanism and stereoselective bond construction"
] | [
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"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "solid-state lattice or crystalline solid interfac... | [
"electronic",
"atomic",
"molecular"
] | As documented by Tsuge H, Tsurumura T (2015) in Topics in Current Chemistry: "Mono-ADP-ribosylation is a post-translational protein modification catalyzed by bacterial toxins and exoenzymes that function as ADP-ribosyltransferases. Despite the importance of this modification, the reaction mechanism remains poorly under... | Direct kinetics, isotopic labeling of Reaction Mechanism of Mono-ADP-Ribosyltransferase Based on Structures under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
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13 | UCHEM-000013 | Subsequent modifications of the terpenoid framework | What chemical principles, structures, or elementary mechanisms govern the subsequent modifications of the terpenoid framework? | For Hydroxylases involved in terpenoid biosynthesis (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the subsequent modifications of the terpenoid framework? | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Hydroxylases involved in terpenoid biosynthesis), what chemical principles, structures, or elementary mechanisms govern th... | Context from BMC Plant Biology (2023): Terpenoids are pervasive in nature and display an immense structural diversity. As the largest category of plant secondary metabolites, terpenoids have important socioeconomic value in the fields of pharmaceuticals, spices, and food manufacturing. The biosynthesis of terpenoid ske... | {
"id": 1,
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | reactivity | [
"reactivity",
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{
"name": "chemical system in Hydroxylases involved in terpenoid biosynthesis",
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{
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... | [
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] | As documented by Zhang Z, Wu QY, Ge Y et al. (2023) in BMC Plant Biology: "Terpenoids are pervasive in nature and display an immense structural diversity. As the largest category of plant secondary metabolites, terpenoids have important socioeconomic value in the fields of pharmaceuticals, spices, and food manufacturin... | Direct kinetics, isotopic labeling of Hydroxylases involved in terpenoid biosynthesis under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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14 | UCHEM-000014 | Mechanism of Allosteric properties of mammalian ALOX15 ort | What is the basis for their allosteric properties? | For Allosteric properties of mammalian ALOX15 orthologs (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What is the basis for their allosteric properties? | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Allosteric properties of mammalian ALOX15 orthologs), what is the basis for their allosteric properties? | Context from The Journal of Biological Chemistry (2026): Lipoxygenases (arachidonic acid lipoxygenase [ALOX]) are non-heme iron-containing dioxygenases that catalyze the oxygenation of polyenoic fatty acid-containing lipids to their corresponding hydroperoxy derivatives. These enzymes are widely distributed in highly d... | {
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"electronic",
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"mechanism_discrimination",
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15 | UCHEM-000015 | Ferrocene-triazole conjugates | Do we know why they are biologically active in Ferrocene-triazole conjugates? | For Ferrocene-triazole conjugates (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: Do we know why they are biologically active in Ferrocene-triazole conjugates? | With respect to electron transfer, cyclization in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Ferrocene-triazole conjugates), do we know why they are biologically active in Ferrocene-triazole conjugates? | Context from Dalton Transactions (2023): The bioorganometallic chemistry of ferrocene has been gaining significance in recent years. This review presents ferrocene-triazole conjugates displaying significant biological properties. The conjugates have been synthesized via azide-alkyne cycloaddition reactions. The data ar... | {
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"electronic",
"atomic",
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] | As documented by Koszytkowska-Stawińska M, Buchowicz W (2023) in Dalton Transactions: "The bioorganometallic chemistry of ferrocene has been gaining significance in recent years. This review presents ferrocene-triazole conjugates displaying significant biological properties. The conjugates have been synthesized via azi... | Direct kinetics, isotopic labeling of Ferrocene-triazole conjugates under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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16 | UCHEM-000016 | CaF in Hydrogen Bonding Phase-Transfer Catalysis with Alkali Metal Fluorides | What mechanistic or structural evidence establishes whether CaF in Hydrogen Bonding Phase-Transfer Catalysis with Alkali Metal Fluorides? | When controlling three-dimensional stereochemistry in Hydrogen Bonding Phase-Transfer Catalysis with Alkali Metal Fluorides (organic mechanisms and synthesis science), what chiral induction factors answer: What mechanistic or structural evidence establishes whether CaF in Hydrogen Bonding Phase-Transfer Catalysis with ... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Hydrogen Bonding Phase-Transfer Catalysis with Alkali Metal Fluorides), what mechanistic or structural evidence establishes whether CaF in Hydrogen Bonding P... | Context from Journal of the American Chemical Society (2022): Phase-transfer catalysis (PTC) is one of the most powerful catalytic manifolds for asymmetric synthesis. Chiral cationic or anionic PTC strategies have enabled a variety of transformations, yet studies on the use of insoluble inorganic salts as nucleophiles ... | {
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"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
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] | As documented by Pupo G, Gouverneur V (2022) in Journal of the American Chemical Society: "Phase-transfer catalysis (PTC) is one of the most powerful catalytic manifolds for asymmetric synthesis. Chiral cationic or anionic PTC strategies have enabled a variety of transformations, yet studies on the use of insoluble ino... | Direct kinetics, isotopic labeling of Hydrogen Bonding Phase-Transfer Catalysis with Alkali Metal under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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17 | UCHEM-000017 | Physiological role in most organisms in Ribonucleoside Hydrolases-Structure, Functions, Physiological Role and Practical | What chemical principles, structures, or elementary mechanisms govern the physiological role in most organisms in Ribonucleoside Hydrolases-Structure, Functions, Physiological Role and Practical Uses? | Regarding the reaction rates, activation barriers, and time-dependent dynamics of Ribonucleoside Hydrolases-Structure, Functions, Physiological Role and Practical Uses (organic mechanisms and synthesis science), what kinetic laws govern: What chemical principles, structures, or elementary mechanisms govern the physiolo... | With respect to metabolic or biochemical transformation, bond formation in aqueous solution or buffered electrolyte (H2O) (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Ribonucleoside Hydrolases-Structure, Functions, Physiological Role and Practical Uses), what chemical prin... | Context from Biomolecules (2023): Ribonucleoside hydrolases are enzymes that catalyze the cleavage of ribonucleosides to nitrogenous bases and ribose. These enzymes are found in many organisms: bacteria, archaea, protozoa, metazoans, yeasts, fungi and plants. Despite the simple reaction catalyzed by these enzymes, thei... | {
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"reactive_intermediates",
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} | open | established_open_question | 0.95 | kinetics | [
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"name": "L-cysteine ... | [
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"solvent_or_medium": "aqueous solution or buffered electrolyte (H2O)",
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"electronic",
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] | As documented by Shaposhnikov LA, Savin SS, Tishkov VI et al. (2023) in Biomolecules: "Ribonucleoside hydrolases are enzymes that catalyze the cleavage of ribonucleosides to nitrogenous bases and ribose. These enzymes are found in many organisms: bacteria, archaea, protozoa, metazoans, yeasts, fungi and plants. Despite... | Direct kinetics, isotopic labeling of Ribonucleoside Hydrolases-Structure, Functions, Physiological Role and Practical under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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18 | UCHEM-000018 | Precise molecular mechanism of action of mangiferin on RA and malignancies | What chemical principles, structures, or elementary steps govern precise molecular mechanism of action of mangiferin on RA and malignancies? | For natural bioactive immunomodulating glucosylxanthone with potential against cancer (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern precise molecular mechanism of action of mang... | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for natural bioactive immunomodulating glucosylxanthone with potential against cancer), what chemical principles, structures, or elementary steps govern... | Context from Journal of Biochemical and Molecular Toxicology (2024): Mangiferin is a naturally occurring glucosylxanthone that has shown promising immunomodulatory effects. It is generally isolated from the leaves, peels, bark, and kernels of Mangifera indica Linn. Mangiferin is like a miraculous natural bioactive mole... | {
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"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
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] | As documented by Akkewar AS, Mishra KA, Sethi KK (2024) in Journal of Biochemical and Molecular Toxicology: "Mangiferin is a naturally occurring glucosylxanthone that has shown promising immunomodulatory effects. It is generally isolated from the leaves, peels, bark, and kernels of Mangifera indica Linn. Mangiferin is ... | Direct kinetics, isotopic labeling of natural bioactive immunomodulating glucosylxanthone with potential under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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19 | UCHEM-000019 | Biological significance of Pse glycans compared with their sialic acid analogues, primarily due | What chemical mechanisms and structural factors govern the biological significance of Pse glycans compared with their sialic acid analogues, primarily due to a lack of access to the synthetically challenging Pse architecture in Synthetic Approaches for Accessing Pseudaminic Acid (Pse) Bacterial Glycans? | For Synthetic Approaches for Accessing Pseudaminic Acid (Pse) Bacterial Glycans (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical mechanisms and structural factors govern the biological significance of Pse glycans compared with thei... | With respect to metabolic or biochemical transformation, bond formation in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Synthetic Approaches for Accessing Pseudaminic Acid (Pse) Bacterial Glycans), what chemical mechanisms and structural factors gover... | Context from ChemBioChem (2020): Pseudaminic acids (Pses) are a group of non-mammalian nonulosonic acids (nulOs) that have been shown to be an important virulence factor for a number of pathogenic bacteria, including emerging multidrug-resistant ESKAPE pathogens. Despite their discovery over 30 years ago, relatively li... | {
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"excitation_or_stimulus": "thermal activation unde... | [
"electronic",
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"molecular"
] | As documented by Flack EKP, Chidwick HS, Best M et al. (2020) in ChemBioChem: "Pseudaminic acids (Pses) are a group of non-mammalian nonulosonic acids (nulOs) that have been shown to be an important virulence factor for a number of pathogenic bacteria, including emerging multidrug-resistant ESKAPE pathogens. Despite th... | Direct kinetics, isotopic labeling of Synthetic Approaches for Accessing Pseudaminic Acid (Pse) under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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"competing_mechanisms_fit_current_data",
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20 | UCHEM-000020 | "druggability" of HECT (homologous to E6AP C terminus) ligases, many | What chemical mechanisms and structural factors govern the "druggability" of HECT (homologous to E6AP C terminus) ligases, many of which are critically implicated in human pathologies? | For Developing Small-Molecule Inhibitors of HECT-Type Ubiquitin Ligases for Therapeutic (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical mechanisms and structural factors govern the "druggability" of HECT (homologous to E6AP C term... | With respect to metabolic or biochemical transformation, bond formation in aqueous solution or buffered electrolyte (H2O) (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Developing Small-Molecule Inhibitors of HECT-Type Ubiquitin Ligases for Therapeutic), what chemical mechan... | Context from ChemBioChem (2018): The ubiquitin system regulates countless physiological and disease-associated processes and has emerged as an attractive entryway for therapeutic efforts. With over 600 members in the human proteome, ubiquitin ligases are the most diverse class of ubiquitylation enzymes and pivotal in e... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
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{
"name": "chemical system in Developing Small-Molecule Inhibitors of HECT-Type Ubiquitin Ligases for Therapeutic Applications",
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"solvent_or_medium": "aqueous solution or buffered electrolyte (H2O)",
"excitation_or_stimulus": "ther... | [
"electronic",
"atomic",
"molecular"
] | As documented by Chen D, Gehringer M, Lorenz S (2018) in ChemBioChem: "The ubiquitin system regulates countless physiological and disease-associated processes and has emerged as an attractive entryway for therapeutic efforts. With over 600 members in the human proteome, ubiquitin ligases are the most diverse class of u... | Direct kinetics, isotopic labeling of Developing Small-Molecule Inhibitors of HECT-Type Ubiquitin Ligases under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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] | review_article | explicit_gap | https://doi.org/10.1002/cbic.201800321 | Chen D, Gehringer M, Lorenz S (2018), "Developing Small-Molecule Inhibitors of HECT-Type Ubiquitin Ligases for Therapeutic Applications: Challenges and Opportunities", ChemBioChem, doi:10.1002/cbic.201800321 | {
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"name": "open_access_chemical_review_corpus",
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21 | UCHEM-000021 | Most information in Antimicrobial Polymer Surfaces Containing Quaternary Ammonium Centers (QACs) | What chemical principles, structures, or elementary steps govern most information in Antimicrobial Polymer Surfaces Containing Quaternary Ammonium Centers (QACs)? | For Antimicrobial Polymer Surfaces Containing Quaternary Ammonium Centers (QACs) (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern most information in Antimicrobial Polymer Surfaces... | With respect to bond formation, bond cleavage in surface reaction medium (applied magnetic field (B0) with radiofrequency/microwave spin manipulation; probed via kinetics, isotopic labeling for Antimicrobial Polymer Surfaces Containing Quaternary Ammonium Centers (QACs)), what chemical principles, structures, or elemen... | Context from International Journal of Molecular Sciences (2024): Synthetic polymer surfaces provide an excellent opportunity for developing materials with inherent antimicrobial and/or biocidal activity, therefore representing an answer to the increasing demand for antimicrobial active medical devices. So far, biologis... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
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} | open | established_open_question | 0.95 | mechanism | [
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"solvent_or_medium": "surface reaction medium",
"excitation_or_stimul... | [
"electronic",
"atomic",
"molecular"
] | As documented by Santoro O, Izzo L (2024) in International Journal of Molecular Sciences: "Synthetic polymer surfaces provide an excellent opportunity for developing materials with inherent antimicrobial and/or biocidal activity, therefore representing an answer to the increasing demand for antimicrobial active medical... | Direct kinetics, isotopic labeling of Antimicrobial Polymer Surfaces Containing Quaternary Ammonium Centers under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
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] | [
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] | review_article | explicit_gap | https://doi.org/10.3390/ijms25147587 | Santoro O, Izzo L (2024), "Antimicrobial Polymer Surfaces Containing Quaternary Ammonium Centers (QACs): Synthesis and Mechanism of Action", International Journal of Molecular Sciences, doi:10.3390/ijms25147587 | {
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"id": 12,
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22 | UCHEM-000022 | Precise molecular mechanism of SCCs anticancer properties | What chemical principles, structures, or elementary steps govern precise molecular mechanism of SCCs anticancer properties? | For Silver carbene complexes (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern precise molecular mechanism of SCCs anticancer properties? | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Silver carbene complexes), what chemical principles, structures, or elementary steps govern precise molecular mechanism of SCCs anticancer properties? | Context from Drug Development Research (2019): Cancer is a major global health problem with large therapeutic challenges. Although substantial progress has been made in cancer therapy, there still remains a need to develop novel and effective treatment strategies to treat several relapsed and refractory cancers. Recent... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | intermediate | [
"intermediate",
"mechanism",
"stereocontrol",
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] | [
{
"name": "chemical system in Silver carbene complexes",
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},
{
"name": "silver nanostructure / substrate (Ag)",
"role": "surface_or_support"... | [
"bond_formation",
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] | [
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"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
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"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Kankala S, Thota N, Björkling F et al. (2019) in Drug Development Research: "Cancer is a major global health problem with large therapeutic challenges. Although substantial progress has been made in cancer therapy, there still remains a need to develop novel and effective treatment strategies to treat ... | Direct kinetics, isotopic labeling of Silver carbene complexes under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1002/ddr.21478 | Kankala S, Thota N, Björkling F et al. (2019), "Silver carbene complexes: An emerging class of anticancer agents", Drug Development Research, doi:10.1002/ddr.21478 | {
"source_id": "SRC-CHEM-00034",
"doi": "10.1002/ddr.21478",
"pmid": "30387164",
"pmcid": null
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23 | UCHEM-000023 | Functions of SigB regulated genes can be categorized with antioxidant biochemical activities | What are the functions of SigB regulated genes can be categorized with antioxidant biochemical activities, such as redoxins, reductases and dehydrogenases, including regulation of low molecular weight thiols, yet their exact cellular role in SigB-regulated antioxidant functions in gram-positive bacteria? | For SigB-regulated antioxidant functions in gram-positive bacteria (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What are the functions of SigB regulated genes can be categorized with antioxidant biochemical activities, such as redoxins, redu... | With respect to electron transfer, bond formation in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for SigB-regulated antioxidant functions in gram-positive bacteria), what are the functions of SigB regulated genes can be categorized with antio... | Context from World Journal of Microbiology & Biotechnology (2021): Oxidative stress can have lethal consequences if organisms do not respond and remediate the damage to DNA, proteins and lipids. Bacterial species respond to oxidative stress by activating transcriptional profiles that include biochemical functions to re... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in SigB-regulated antioxidant functions in gram-positive bacteria",
"role": "central_system",
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"state_descriptor": "reactive_intermediate"
},
{
"name": "hydrogen sulfide / thiol moiety (H... | [
"electron_transfer",
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"biological",
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
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"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Tran HT, Bonilla CY (2021) in World Journal of Microbiology & Biotechnology: "Oxidative stress can have lethal consequences if organisms do not respond and remediate the damage to DNA, proteins and lipids. Bacterial species respond to oxidative stress by activating transcriptional profiles that include... | Direct kinetics, isotopic labeling of SigB-regulated antioxidant functions in gram-positive bacteria under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1007/s11274-021-03004-7 | Tran HT, Bonilla CY (2021), "SigB-regulated antioxidant functions in gram-positive bacteria", World Journal of Microbiology & Biotechnology, doi:10.1007/s11274-021-03004-7 | {
"source_id": "SRC-CHEM-00035",
"doi": "10.1007/s11274-021-03004-7",
"pmid": "33544236",
"pmcid": null
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"Tran HT",
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24 | UCHEM-000024 | Exact nature of any intermediates (Singlet Oxygen Generation, Quenching and Reactivity with Metal Thiolates) | What chemical principles, structures, or elementary mechanisms govern the exact nature of any intermediates? | For Singlet Oxygen Generation, Quenching and Reactivity with Metal Thiolates (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the exact nature of any intermediates? | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Singlet Oxygen Generation, Quenching and Reactivity with Metal Thiolates), what chemical principles, structures, or elementary mechanisms govern the exact na... | Context from Photochemistry and Photobiology (2021): Metal thiolate complexes can act as photosensitizers for the generation of singlet oxygen, quenchers of singlet oxygen, and they may undergo chemical reactions with singlet oxygen leading to oxidized thiolate ligands. This review covers all of the chemical reactions ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | reactivity | [
"reactivity",
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Singlet Oxygen Generation, Quenching and Reactivity with Metal Thiolates",
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"inchikey": null,
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},
{
"name": "hydrogen sulfide / thiol... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Monsour CG, Decosto CM, Tafolla-Aguirre BJ et al. (2021) in Photochemistry and Photobiology: "Metal thiolate complexes can act as photosensitizers for the generation of singlet oxygen, quenchers of singlet oxygen, and they may undergo chemical reactions with singlet oxygen leading to oxidized thiolate ... | Direct kinetics, isotopic labeling of Singlet Oxygen Generation, Quenching and Reactivity under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1111/php.13487 | Monsour CG, Decosto CM, Tafolla-Aguirre BJ et al. (2021), "Singlet Oxygen Generation, Quenching and Reactivity with Metal Thiolates", Photochemistry and Photobiology, doi:10.1111/php.13487 | {
"source_id": "SRC-CHEM-00036",
"doi": "10.1111/php.13487",
"pmid": "34242405",
"pmcid": "PMC8688169"
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{
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"Monsour CG",
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25 | UCHEM-000025 | Regulatory function in toxicology in Sulfane Sulfur in Toxicology | What chemical principles, structures, or elementary mechanisms govern the regulatory function in toxicology in Sulfane Sulfur in Toxicology? | For Sulfane Sulfur in Toxicology (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the regulatory function in toxicology in Sulfane Sulfur in Toxicology? | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Sulfane Sulfur in Toxicology), what chemical principles, structures, or elementary mechanisms govern the regulatory function in toxicology in Sul... | Context from Toxicological Sciences : An Official Journal of the Society of Toxicology (2019): Electrophiles can undergo covalent modification of cellular proteins associated with its dysfunction, thereby exerting toxicity. Small nucleophilic molecules such as glutathione protect cells from electrophilic insult by bind... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Sulfane Sulfur in Toxicology",
"role": "central_system",
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"state_descriptor": "reactive_intermediate"
},
{
"name": "hydrogen sulfide / thiol moiety (H2S)",
"role": "reactant",
... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"biological",
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Shinkai Y, Kumagai Y (2019) in Toxicological Sciences : An Official Journal of the Society of Toxicology: "Electrophiles can undergo covalent modification of cellular proteins associated with its dysfunction, thereby exerting toxicity. Small nucleophilic molecules such as glutathione protect cells from... | Direct kinetics, isotopic labeling of Sulfane Sulfur in Toxicology under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1093/toxsci/kfz091 | Shinkai Y, Kumagai Y (2019), "Sulfane Sulfur in Toxicology: A Novel Defense System Against Electrophilic Stress", Toxicological Sciences : An Official Journal of the Society of Toxicology, doi:10.1093/toxsci/kfz091 | {
"source_id": "SRC-CHEM-00037",
"doi": "10.1093/toxsci/kfz091",
"pmid": "30985901",
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"Kumagai Y"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
26 | UCHEM-000026 | Molecular mechanisms causing chaperonin failure and tissue lesions | What chemical principles, structures, or elementary mechanisms govern the molecular mechanisms causing chaperonin failure and tissue lesions? | For Bridging human chaperonopathies and microbial chaperonins (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the molecular mechanisms causing chaperonin failure and tissue l... | With respect to bond formation, bond cleavage in aqueous solution or buffered electrolyte (H2O) (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Bridging human chaperonopathies and microbial chaperonins), what chemical principles, structures, or elementary mechanisms govern th... | Context from Communications Biology (2019): Chaperonins are molecular chaperones that play critical physiological roles, but they can be pathogenic. Malfunctional chaperonins cause chaperonopathies of great interest within various medical specialties. Although the clinical-genetic aspects of many chaperonopathies are k... | {
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"slug": "organic_mechanisms_and_synthesis_science"
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
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{
"name": "chemical system in Bridging human chaperonopathies and microbial chaperonins",
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{
"name": "benzene / aromatic arene (C6H6)",
"... | [
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"solvent_or_medium": "aqueous solution or buffered electrolyte (H2O)",
"excitation_or_stimulus": "ther... | [
"electronic",
"atomic",
"molecular"
] | As documented by Conway de Macario E, Yohda M, Macario AJL et al. (2019) in Communications Biology: "Chaperonins are molecular chaperones that play critical physiological roles, but they can be pathogenic. Malfunctional chaperonins cause chaperonopathies of great interest within various medical specialties. Although th... | Direct kinetics, isotopic labeling of Bridging human chaperonopathies and microbial chaperonins under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
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] | [
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] | review_article | explicit_gap | https://doi.org/10.1038/s42003-019-0318-5 | Conway de Macario E, Yohda M, Macario AJL et al. (2019), "Bridging human chaperonopathies and microbial chaperonins", Communications Biology, doi:10.1038/s42003-019-0318-5 | {
"source_id": "SRC-CHEM-00038",
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"pmid": "30911678",
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{
"id": 12,
"name": "open_access_chemical_review_corpus",
"display_name": "Open-Access Chemical Review & Perspect... | [
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27 | UCHEM-000027 | Molecular mechanisms underlying their remarkable effect in Free Radicals Mediated Redox Signaling | What chemical principles, structures, or elementary steps govern molecular mechanisms underlying their remarkable effect in Free Radicals Mediated Redox Signaling in Plant Stress Tolerance? | For Free Radicals Mediated Redox Signaling in Plant Stress Tolerance (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern molecular mechanisms underlying their remarkable effect in Fre... | With respect to electron transfer, bond formation in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Free Radicals Mediated Redox Signaling in Plant Stress Tolerance), what chemical principles, structures, or elementary steps govern molecular... | Context from Life (2023): Abiotic and biotic stresses negatively affect plant cellular and biological processes, limiting their growth and productivity. Plants respond to these environmental cues and biotrophic attackers by activating intricate metabolic-molecular signaling networks precisely and coordinately. One of t... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Free Radicals Mediated Redox Signaling in Plant Stress Tolerance",
"role": "central_system",
"formula": null,
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"state_descriptor": "reactive_intermediate"
},
{
"name": "iron catalytic center (Fe)",
... | [
"electron_transfer",
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"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
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"biological_milieu",
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"liquid"
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"biological",
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"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "biological milieu reaction medium",
"excitat... | [
"electronic",
"atomic",
"molecular"
] | As documented by Rai KK, Kaushik P (2023) in Life: "Abiotic and biotic stresses negatively affect plant cellular and biological processes, limiting their growth and productivity. Plants respond to these environmental cues and biotrophic attackers by activating intricate metabolic-molecular signaling networks precisely ... | Direct kinetics, isotopic labeling of Free Radicals Mediated Redox Signaling in Plant under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
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"kinetics",
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] | review_article | explicit_gap | https://doi.org/10.3390/life13010204 | Rai KK, Kaushik P (2023), "Free Radicals Mediated Redox Signaling in Plant Stress Tolerance", Life, doi:10.3390/life13010204 | {
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28 | UCHEM-000028 | PMMO catalysis in tale of two methane monooxygenases | What chemical principles, structures, or elementary steps govern the pMMO catalysis in tale of two methane monooxygenases? | During catalytic or functional operation of tale of two methane monooxygenases (organic mechanisms and synthesis science), what is the true resting or turnover-limiting active chemical species: What chemical principles, structures, or elementary steps govern the pMMO catalysis in tale of two methane monooxygenases? | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for tale of two methane monooxygenases), what chemical principles, structures, or elementary steps govern the pMMO catalysis i... | Context from Journal of Biological Inorganic Chemistry : JBIC (2017): Methane monooxygenase (MMO) enzymes activate O 2 for oxidation of methane. Two distinct MMOs exist in nature, a soluble form that uses a diiron active site (sMMO) and a membrane-bound form with a catalytic copper center (pMMO). Understanding the reac... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | active_state | [
"active_state",
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in tale of two methane monooxygenases",
"role": "central_system",
"formula": null,
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"state_descriptor": "reactive_intermediate"
},
{
"name": "methane (CH4)",
"role": "reactant",
"formula": "CH4",
... | [
"metabolic_or_biochemical_transformation",
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
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"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Ross MO, Rosenzweig AC (2017) in Journal of Biological Inorganic Chemistry : JBIC: "Methane monooxygenase (MMO) enzymes activate O 2 for oxidation of methane. Two distinct MMOs exist in nature, a soluble form that uses a diiron active site (sMMO) and a membrane-bound form with a catalytic copper center... | Direct kinetics, isotopic labeling of tale of two methane monooxygenases under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1007/s00775-016-1419-y | Ross MO, Rosenzweig AC (2017), "A tale of two methane monooxygenases", Journal of Biological Inorganic Chemistry : JBIC, doi:10.1007/s00775-016-1419-y | {
"source_id": "SRC-CHEM-00040",
"doi": "10.1007/s00775-016-1419-y",
"pmid": "27878395",
"pmcid": "PMC5352483"
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"Ross MO",
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29 | UCHEM-000029 | Active site(s) and the mechanism of methane oxidation in Copper-dioxygen complex mediated C-H | What is the nature of the active site(s) and the mechanism of methane oxidation in Copper-dioxygen complex mediated C-H bond oxygenation? | During catalytic or functional operation of Copper-dioxygen complex mediated C-H bond oxygenation (organic mechanisms and synthesis science), what is the true resting or turnover-limiting active chemical species: What is the nature of the active site(s) and the mechanism of methane oxidation in Copper-dioxygen complex ... | With respect to metabolic or biochemical transformation, bond formation in methanol (MeOH) solution (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Copper-dioxygen complex mediated C-H bond oxygenation), what is the nature of the active site(s) and the mechanism of methane ox... | Context from Current Opinion in Chemical Biology (2009): Particulate methane monooxygenase (pMMO), an integral membrane protein found in methanotrophic bacteria, catalyzes the oxidation of methane to methanol. Expression and greater activity of the enzyme in the presence of copper ion suggest that pMMO is a cuprous met... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | active_state | [
"active_state",
"structure",
"mechanism",
"stereocontrol"
] | [
{
"name": "chemical system in Copper-dioxygen complex mediated C-H bond oxygenation",
"role": "central_system",
"formula": null,
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"state_descriptor": "reactive_intermediate"
},
{
"name": "methane (CH4)",
"role": "reactant",
... | [
"metabolic_or_biochemical_transformation",
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"crystalline_solid",
"biological_milieu",
"solution"
] | [
"biological",
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "methanol (MeOH) solution",
"excitation_or_stimu... | [
"electronic",
"atomic",
"molecular"
] | As documented by Himes RA, Karlin KD (2009) in Current Opinion in Chemical Biology: "Particulate methane monooxygenase (pMMO), an integral membrane protein found in methanotrophic bacteria, catalyzes the oxidation of methane to methanol. Expression and greater activity of the enzyme in the presence of copper ion sugges... | Direct kinetics, isotopic labeling of Copper-dioxygen complex mediated C-H bond oxygenation under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1016/j.cbpa.2009.02.025 | Himes RA, Karlin KD (2009), "Copper-dioxygen complex mediated C-H bond oxygenation: relevance for particulate methane monooxygenase (pMMO)", Current Opinion in Chemical Biology, doi:10.1016/j.cbpa.2009.02.025 | {
"source_id": "SRC-CHEM-00041",
"doi": "10.1016/j.cbpa.2009.02.025",
"pmid": "19286415",
"pmcid": "PMC2676220"
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30 | UCHEM-000030 | Subsequent rearrangement of hydrogen bonding networks key for signaling | What molecular mechanisms, structural factors, or elementary steps determine the subsequent rearrangement of hydrogen bonding networks key for signaling? | For Photochemistry of flavoprotein light sensors (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What molecular mechanisms, structural factors, or elementary steps determine the subsequent rearrangement of hydrogen bonding networks key for sign... | With respect to proton transfer, electron transfer in biological milieu reaction medium (UV-visible or near-IR electromagnetic photoexcitation (hν); probed via kinetics, isotopic labeling for Photochemistry of flavoprotein light sensors), what molecular mechanisms, structural factors, or elementary steps determine the ... | Context from Nature Chemical Biology (2014): Three major classes of flavin photosensors, light oxygen voltage (LOV) domains, blue light sensor using FAD (BLUF) proteins and cryptochromes (CRYs), regulate diverse biological activities in response to blue light. Recent studies of structure, spectroscopy and chemical mech... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 5,
"level": 5,
"name": "L5: Foundational or Grand"
} | open | established_open_question | 0.95 | electron_transfer | [
"electron_transfer",
"excited_state",
"conformation",
"mechanism"
] | [
{
"name": "chemical system in Photochemistry of flavoprotein light sensors",
"role": "central_system",
"formula": null,
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"state_descriptor": "reactive_intermediate"
},
{
"name": "urea / hydrogen-bonding motif (CH4N2O)",
"role":... | [
"proton_transfer",
"electron_transfer",
"rearrangement",
"bond_formation"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
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"photoexcited",
"ambient"
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"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
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"ph_or_potential": "acidic proton-activity regime (pH < 5 or non-aqueous Brønsted acid)",
"solvent_or_medium": "biological milieu reaction medium",
"excitat... | [
"electronic",
"atomic",
"molecular"
] | As documented by Conrad KS, Manahan CC, Crane BR (2014) in Nature Chemical Biology: "Three major classes of flavin photosensors, light oxygen voltage (LOV) domains, blue light sensor using FAD (BLUF) proteins and cryptochromes (CRYs), regulate diverse biological activities in response to blue light. Recent studies of s... | Direct kinetics, isotopic labeling of Photochemistry of flavoprotein light sensors under photoexcited conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1038/nchembio.1633 | Conrad KS, Manahan CC, Crane BR (2014), "Photochemistry of flavoprotein light sensors", Nature Chemical Biology, doi:10.1038/nchembio.1633 | {
"source_id": "SRC-CHEM-00042",
"doi": "10.1038/nchembio.1633",
"pmid": "25229449",
"pmcid": "PMC4258882"
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31 | UCHEM-000031 | For realizing fully automated construction of diverse molecules | What molecular mechanisms, structural factors, or elementary steps determine for realizing fully automated construction of diverse molecules? | For Atom-by-Atom Iterative Synthetic Logic (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What molecular mechanisms, structural factors, or elementary steps determine for realizing fully automated construction of diverse molecules? | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Atom-by-Atom Iterative Synthetic Logic), what molecular mechanisms, structural factors, or elementary steps determine for realizing fully automated construct... | Context from ACS Central Science (2025): Fully automated preparation of diverse small organic molecules remains a formidable challenge due to the inherent constraints of conventional synthetic philosophies. The existing automation approaches require access to either almost unlimited kinds of chemical reagents or custom... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Atom-by-Atom Iterative Synthetic Logic",
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},
{
"name": "benzene / aromatic arene (C6H6)",
"role": "reactant",
... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Chen M, Dong G (2025) in ACS Central Science: "Fully automated preparation of diverse small organic molecules remains a formidable challenge due to the inherent constraints of conventional synthetic philosophies. The existing automation approaches require access to either almost unlimited kinds of chem... | Direct kinetics, isotopic labeling of Atom-by-Atom Iterative Synthetic Logic under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1021/acscentsci.5c00526 | Chen M, Dong G (2025), "Atom-by-Atom Iterative Synthetic Logic: Laying the Foundation for Programmable Automated Construction of Small Organic Molecules", ACS Central Science, doi:10.1021/acscentsci.5c00526 | {
"source_id": "SRC-CHEM-00043",
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32 | UCHEM-000032 | Enantioselective construction of all-carbon quaternary centers | What molecular mechanisms, structural factors, or elementary steps determine enantioselective construction of all-carbon quaternary centers? | When controlling three-dimensional stereochemistry in Asymmetric Carbene Transformations for the Construction of All-Carbon Quaternary (organic mechanisms and synthesis science), what chiral induction factors answer: What molecular mechanisms, structural factors, or elementary steps determine enantioselective construct... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Asymmetric Carbene Transformations for the Construction of All-Carbon Quaternary), what molecular mechanisms, structural factors, or elementary steps determi... | Context from Chemistry – A European Journal (2024): Asymmetric catalytic carbene reactions have been well documented in the last few decades for the expeditious assembly of chiral molecules with structural diversity. However, the enantioselective construction of all-carbon quaternary centers remains a challenge in this... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
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"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | stereocontrol | [
"stereocontrol",
"intermediate",
"reactivity",
"mechanism"
] | [
{
"name": "chemical system in Asymmetric Carbene Transformations for the Construction of All-Carbon Quaternary Centers",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "adenosin... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Yao M, Dong S, Xu X (2024) in Chemistry – A European Journal: "Asymmetric catalytic carbene reactions have been well documented in the last few decades for the expeditious assembly of chiral molecules with structural diversity. However, the enantioselective construction of all-carbon quaternary centers... | Direct kinetics, isotopic labeling of Asymmetric Carbene Transformations for the Construction under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1002/chem.202304299 | Yao M, Dong S, Xu X (2024), "Asymmetric Carbene Transformations for the Construction of All-Carbon Quaternary Centers", Chemistry – A European Journal, doi:10.1002/chem.202304299 | {
"source_id": "SRC-CHEM-00044",
"doi": "10.1002/chem.202304299",
"pmid": "38366703",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
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"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
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"Yao M",
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"Xu X"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
33 | UCHEM-000033 | Mechanistic relevance of these states (such as half-of-sites reactivity) in Nitrogenase beyond | What molecular mechanisms, structural factors, or elementary steps determine the mechanistic relevance of these states (such as half-of-sites reactivity) in Nitrogenase beyond the Resting State? | During catalytic or functional operation of Nitrogenase beyond the Resting State (organic mechanisms and synthesis science), what is the true resting or turnover-limiting active chemical species: What molecular mechanisms, structural factors, or elementary steps determine the mechanistic relevance of these states (such... | With respect to electron transfer, catalyst activation in aqueous solution or buffered electrolyte (H2O) (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Nitrogenase beyond the Resting State), what molecular mechanisms, structural factors, or elementary steps determine the mec... | Context from Molecules (2023): Nitrogenases have the remarkable ability to catalyze the reduction of dinitrogen to ammonia under physiological conditions. How does this happen? The current view of the nitrogenase mechanism focuses on the role of hydrides, the binding of dinitrogen in a reductive elimination process cou... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 5,
"level": 5,
"name": "L5: Foundational or Grand"
} | open | established_open_question | 0.95 | active_state | [
"active_state",
"electron_transfer",
"reactivity",
"mechanism"
] | [
{
"name": "chemical system in Nitrogenase beyond the Resting State",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "dinitrogen (N2)",
"role": "reactant",
"formula": "N2... | [
"electron_transfer",
"catalyst_activation",
"metabolic_or_biochemical_transformation",
"bond_formation"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"biological",
"ambient"
] | {
"temperature": "physiological temperature (310 K / 37 °C)",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "aqueous solution or buffered electrolyte (H2O)",
"excitation_or_stimulus": "ther... | [
"electronic",
"atomic",
"molecular"
] | As documented by Warmack RA, Rees DC (2023) in Molecules: "Nitrogenases have the remarkable ability to catalyze the reduction of dinitrogen to ammonia under physiological conditions. How does this happen?" Resolving this active state question is challenged by competing electron transfer, catalyst activation pathways un... | Direct kinetics, isotopic labeling of Nitrogenase beyond the Resting State under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.3390/molecules28247952 | Warmack RA, Rees DC (2023), "Nitrogenase beyond the Resting State: A Structural Perspective", Molecules, doi:10.3390/molecules28247952 | {
"source_id": "SRC-CHEM-00045",
"doi": "10.3390/molecules28247952",
"pmid": "38138444",
"pmcid": "PMC10745740"
} | cc by | verbatim_allowed | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
},
{
"id": 12,
"name": "open_access_chemical_review_corpus",
"display_name": "Open-Access Chemical Review & Perspect... | [
"organic_mechanisms_and_synthesis_science",
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34 | UCHEM-000034 | Contribution of super-sulfides to this substitution reaction in The Role of Supersulfide | What molecular mechanisms, structural factors, or elementary steps determine the contribution of super-sulfides to this substitution reaction in [The Role of Supersulfide in Methylmercury Detoxification]? | For [The Role of Supersulfide in Methylmercury Detoxification] (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What molecular mechanisms, structural factors, or elementary steps determine the contribution of super-sulfides to this substitution ... | With respect to substitution, bond formation in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for [The Role of Supersulfide in Methylmercury Detoxification]), what molecular mechanisms, structural factors, or elementary steps determine the cont... | Context from Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan (2024): Methylmercury is a ubiquitous neurotoxic substance present in the environment, and health concerns, especially through the consumption of seafood, remain. Glutathione (GSH)-mediated detoxification and the excretion of methylmercury ar... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in [The Role of Supersulfide in Methylmercury Detoxification]",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "hydrogen sulfide / thiol moiety (H2S)"... | [
"substitution",
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"biological",
"ambient"
] | {
"temperature": "physiological temperature (310 K / 37 °C)",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "biological milieu reaction medium",
"excitation_or_stimulus": "thermal activa... | [
"electronic",
"atomic",
"molecular"
] | As documented by Toyama T, Kudo R, Saito Y (2024) in Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan: "Methylmercury is a ubiquitous neurotoxic substance present in the environment, and health concerns, especially through the consumption of seafood, remain. Glutathione (GSH)-mediated detoxification and... | Direct kinetics, isotopic labeling of [The Role of Supersulfide in Methylmercury Detoxification] under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1248/yakushi.23-00162-1 | Toyama T, Kudo R, Saito Y (2024), "[The Role of Supersulfide in Methylmercury Detoxification]", Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan, doi:10.1248/yakushi.23-00162-1 | {
"source_id": "SRC-CHEM-00046",
"doi": "10.1248/yakushi.23-00162-1",
"pmid": "38171793",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
}
] | [
"organic_mechanisms_and_synthesis_science",
"mechanism",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,024 | [
"Toyama T",
"Kudo R",
"Saito Y"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
35 | UCHEM-000035 | And the analysis methods being employed (Designing End-of-Life Recyclable Polymers via Diels-Alder Chemistry) | What molecular mechanisms, structural factors, or elementary steps determine and the analysis methods being employed? | Regarding the reaction rates, activation barriers, and time-dependent dynamics of Designing End-of-Life Recyclable Polymers via Diels-Alder Chemistry (organic mechanisms and synthesis science), what kinetic laws govern: What molecular mechanisms, structural factors, or elementary steps determine and the analysis method... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Designing End-of-Life Recyclable Polymers via Diels-Alder Chemistry), what molecular mechanisms, structural factors, or elementary steps determine and the an... | Context from Macromolecular Rapid Communications (2022): The purpose of this review is to critically assess the kinetic behavior of the furan/maleimide Diels-Alder click reaction. The popularity of this reaction is evident and still continues to grow, which is likely attributed to its reversibility at temperatures abov... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | kinetics | [
"kinetics",
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Designing End-of-Life Recyclable Polymers via Diels-Alder Chemistry",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "1,3-butadiene / conjugated di... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "100 °C (explicitly specified thermal regime)",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_stimulus": "thermal activation u... | [
"electronic",
"atomic",
"molecular"
] | As documented by van den Tempel P, Picchioni F, Bose RK (2022) in Macromolecular Rapid Communications: "The purpose of this review is to critically assess the kinetic behavior of the furan/maleimide Diels-Alder click reaction. The popularity of this reaction is evident and still continues to grow, which is likely attri... | Direct kinetics, isotopic labeling of Designing End-of-Life Recyclable Polymers via Diels-Alder Chemistry under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1002/marc.202200023 | van den Tempel P, Picchioni F, Bose RK (2022), "Designing End-of-Life Recyclable Polymers via Diels-Alder Chemistry: A Review on the Kinetics of Reversible Reactions", Macromolecular Rapid Communications, doi:10.1002/marc.202200023 | {
"source_id": "SRC-CHEM-00047",
"doi": "10.1002/marc.202200023",
"pmid": "35238107",
"pmcid": null
} | cc by | verbatim_allowed | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
},
{
"id": 12,
"name": "open_access_chemical_review_corpus",
"display_name": "Open-Access Chemical Review & Perspect... | [
"organic_mechanisms_and_synthesis_science",
"kinetics",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,022 | [
"van den Tempel P",
"Picchioni F",
"Bose RK"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
36 | UCHEM-000036 | Most recently discovered class of B12 enzymes | What chemical principles, structures, or elementary mechanisms govern the most recently discovered class of B12 enzymes? | For many faces of vitamin B12 (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the most recently discovered class of B12 enzymes? | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for many faces of vitamin B12), what chemical principles, structures, or elementary mechanisms govern the most recently discov... | Context from Annual Review of Biochemistry (2003): Vitamin B12 is a complex organometallic cofactor associated with three subfamilies of enzymes: the adenosylcobalamin-dependent isomerases, the methylcobalamin-dependent methyltransferases, and the dehalogenases. Different chemical aspects of the cofactor are exploited ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in many faces of vitamin B12",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "dichloromethane / organohalide (CH2Cl2)",
"role": "solvent_or_mediu... | [
"metabolic_or_biochemical_transformation",
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Banerjee R, Ragsdale SW (2003) in Annual Review of Biochemistry: "Vitamin B12 is a complex organometallic cofactor associated with three subfamilies of enzymes: the adenosylcobalamin-dependent isomerases, the methylcobalamin-dependent methyltransferases, and the dehalogenases. Different chemical aspect... | Direct kinetics, isotopic labeling of many faces of vitamin B12 under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1146/annurev.biochem.72.121801.161828 | Banerjee R, Ragsdale SW (2003), "The many faces of vitamin B12: catalysis by cobalamin-dependent enzymes", Annual Review of Biochemistry, doi:10.1146/annurev.biochem.72.121801.161828 | {
"source_id": "SRC-CHEM-00048",
"doi": "10.1146/annurev.biochem.72.121801.161828",
"pmid": "14527323",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
}
] | [
"organic_mechanisms_and_synthesis_science",
"mechanism",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,003 | [
"Banerjee R",
"Ragsdale SW"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
37 | UCHEM-000037 | Conformational change and H(+):ATP coupling (Biogenesis and function of the yeast plasma-membrane H(+)-ATPase) | What molecular mechanisms, structural factors, or elementary steps determine conformational change and H(+):ATP coupling? | For Biogenesis and function of the yeast plasma-membrane H(+)-ATPase (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What molecular mechanisms, structural factors, or elementary steps determine conformational change and H(+):ATP coupling? | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Biogenesis and function of the yeast plasma-membrane H(+)-ATPase), what molecular mechanisms, structural factors, or elementary steps determine conf... | Context from The Journal of Experimental Biology (2000): One of the most abundant proteins in the yeast plasma membrane is the P-type H(+)-ATPase that pumps protons out of the cell, supplying the driving force for a wide array of H(+)-dependent cotransporters. The ATPase is a 100 kDa polypeptide, anchored in the lipid ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | conformation | [
"conformation",
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Biogenesis and function of the yeast plasma-membrane H(+)-ATPase",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "water (H2O)",
"role": "solve... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Ambesi A, Miranda M, Petrov VV et al. (2000) in The Journal of Experimental Biology: "One of the most abundant proteins in the yeast plasma membrane is the P-type H(+)-ATPase that pumps protons out of the cell, supplying the driving force for a wide array of H(+)-dependent cotransporters. The ATPase is... | Direct kinetics, isotopic labeling of Biogenesis and function of the yeast plasma-membrane under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1242/jeb.203.1.155 | Ambesi A, Miranda M, Petrov VV et al. (2000), "Biogenesis and function of the yeast plasma-membrane H(+)-ATPase", The Journal of Experimental Biology, doi:10.1242/jeb.203.1.155 | {
"source_id": "SRC-CHEM-00049",
"doi": "10.1242/jeb.203.1.155",
"pmid": "10600684",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
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] | [
"organic_mechanisms_and_synthesis_science",
"conformation",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,000 | [
"Ambesi A",
"Miranda M",
"Petrov VV",
"Slayman CW"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
38 | UCHEM-000038 | Causal link between an APE1 defect and human disease | What chemical principles, structures, or elementary mechanisms govern a causal link between an APE1 defect and human disease? | In organic mechanisms and synthesis science transformations involving Human apurinic/apyrimidinic endonuclease, how do competing transition states and steric/electronic effects control outcome selectivity: What chemical principles, structures, or elementary mechanisms govern a causal link between an APE1 defect and hum... | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Human apurinic/apyrimidinic endonuclease), what chemical principles, structures, or elementary mechanisms govern a causal ... | Context from Antioxidants & Redox Signaling (2014): Significance Human apurinic/apyrimidinic endonuclease 1 (APE1, also known as REF-1) was isolated based on its ability to cleave at AP sites in DNA or activate the DNA binding activity of certain transcription factors. We review herein topics related to this multi-func... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | selectivity | [
"selectivity",
"active_state",
"mechanism",
"stereocontrol"
] | [
{
"name": "chemical system in Human apurinic/apyrimidinic endonuclease",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "acetic acid / carboxylate (CH3COOH)",
"role": "react... | [
"metabolic_or_biochemical_transformation",
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
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"excitation... | [
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] | As documented by Li M, Wilson DM (2014) in Antioxidants & Redox Signaling: "Significance Human apurinic/apyrimidinic endonuclease 1 (APE1, also known as REF-1) was isolated based on its ability to cleave at AP sites in DNA or activate the DNA binding activity of certain transcription factors. We review herein topics re... | Direct kinetics, isotopic labeling of Human apurinic/apyrimidinic endonuclease under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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39 | UCHEM-000039 | Reaction mechanism of ACVS (δ-(L-α-aminoadipyl)-L-cysteinyl-D-valine synthetase (ACVS)) | What chemical principles, structures, or elementary mechanisms govern the reaction mechanism of ACVS? | For δ-(L-α-aminoadipyl)-L-cysteinyl-D-valine synthetase (ACVS) (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the reaction mechanism of ACVS? | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for δ-(L-α-aminoadipyl)-L-cysteinyl-D-valine synthetase (ACVS)), what chemical principles, structures, or elementary mechanism... | Context from Journal of Industrial Microbiology & Biotechnology (2017): The δ-(L-α-aminoadipyl)-L-cysteinyl-D-valine (ACV) tripeptide is the first dedicated intermediate in the biosynthetic pathway leading to the penicillin and cephalosporin classes of β-lactam natural products in bacteria and fungi. It is synthesized ... | {
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40 | UCHEM-000040 | Mechanism underlying this specificity in Common Mechanism for Target Specificity of Protein | What chemical principles, structures, or elementary steps govern mechanism underlying this specificity in Common Mechanism for Target Specificity of Protein- and DNA-Targeting? | For Common Mechanism for Target Specificity of Protein- and DNA-Targeting (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern mechanism underlying this specificity in Common Mechanism... | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Common Mechanism for Target Specificity of Protein- and DNA-Targeting), what chemical principles, structures, or elementary steps govern mechanism u... | Context from Toxins (2021): Many bacterial pathogens utilize ADP-ribosyltransferases (ARTs) as virulence factors. The critical aspect of ARTs is their target specificity. Each individual ART modifies a specific residue of its substrates, which could be proteins, DNA, or antibiotics. However, the mechanism underlying th... | {
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"electronic",
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41 | UCHEM-000041 | Mechanism linking mARC enzymes with lipid metabolism | What chemical principles, structures, or elementary steps govern mechanism linking mARC enzymes with lipid metabolism? | For mitochondrial amidoxime reducing component-from prodrug-activation mechanism to drug-metabolizing enzyme (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern mechanism linking mARC... | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for mitochondrial amidoxime reducing component-from prodrug-activation mechanism to drug-metabolizing enzyme), what chemical p... | Context from The Journal of Biological Chemistry (2023): The mitochondrial amidoxime-reducing component (mARC) is one of five known molybdenum enzymes in eukaryotes. mARC belongs to the MOSC domain superfamily, a large group of so far poorly studied molybdoenzymes. mARC was initially discovered as the enzyme activating... | {
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"... | [
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"electronic",
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42 | UCHEM-000042 | Mechanism of β-Branching in the biosynthesis of bongkrekic | What is the basis for these divergent β-branching pathways in β-Branching in the biosynthesis of bongkrekic acid? | For β-Branching in the biosynthesis of bongkrekic acid (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What is the basis for these divergent β-branching pathways in β-Branching in the biosynthesis of bongkrekic acid? | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for β-Branching in the biosynthesis of bongkrekic acid), what is the basis for these divergent β-branching pathways in β-Branc... | Context from RSC Advances (2025): Bongkrekic acid is a potent respiratory toxin which inhibits the mitochondrial ATP/ADP carrier protein. The polyketide synthase that biosynthesises bongkrekic acid recruits a discrete cassette of β-branching enzymes (BonF-BonI) to install two distinct β-branches: an endo -β-methyl bran... | {
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"electronic",
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43 | UCHEM-000043 | Comprehensive overview that integrates and critically assesses wearable plant sensors across various facets | What chemical principles, structures, or elementary mechanisms govern a comprehensive overview that integrates and critically assesses wearable plant sensors across various facets, including their fundamental elements, classification, design, sensing mechanism, fabrication, characterization and application in Wearable ... | For Wearable sensor supports in-situ and continuous monitoring of plant (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern a comprehensive overview that integrates and criticall... | With respect to bond formation, bond cleavage in aqueous solution or buffered electrolyte (H2O) (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Wearable sensor supports in-situ and continuous monitoring of plant), what chemical principles, structures, or elementary mechanisms... | Context from Plant Biotechnology Journal (2024): Plant health is intricately linked to crop quality, food security and agricultural productivity. Obtaining accurate plant health information is of paramount importance in the realm of precision agriculture. Wearable sensors offer an exceptional avenue for investigating p... | {
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44 | UCHEM-000044 | Clear resolution of this issue in New concepts in the regulation | What chemical principles, structures, or elementary mechanisms govern a clear resolution of this issue in New concepts in the regulation of an ancient reaction? | For New concepts in the regulation of an ancient reaction (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern a clear resolution of this issue in New concepts in the regulation o... | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for New concepts in the regulation of an ancient reaction), what chemical principles, structures, or elementary mechanisms govern a clear resolution ... | Context from Immunological Reviews (2004): The lymphoid-specific factors, recombination-activating gene 1 (RAG1) and RAG2, initiate V(D)J recombination by introducing DNA double-stand breaks at specific sites in the genome. In addition to this critical endonuclease activity, the RAG proteins catalyze other chemical rea... | {
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] | As documented by Chatterji M, Tsai CL, Schatz DG (2004) in Immunological Reviews: "The lymphoid-specific factors, recombination-activating gene 1 (RAG1) and RAG2, initiate V(D)J recombination by introducing DNA double-stand breaks at specific sites in the genome. In addition to this critical endonuclease activity, the ... | Direct kinetics, isotopic labeling of New concepts in the regulation under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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45 | UCHEM-000045 | Complete structural and mechanistic understanding of this highly conserved and essential chaperonin | What chemical principles, structures, or elementary mechanisms govern A complete structural and mechanistic understanding of this highly conserved and essential chaperonin in Mechanism and Function of Group II Chaperonins? | For Mechanism and Function of Group II Chaperonins (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern A complete structural and mechanistic understanding of this highly conserve... | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Mechanism and Function of Group II Chaperonins), what chemical principles, structures, or elementary mechanisms govern ... | Context from Journal of Molecular Biology (2015): Protein folding in the cell requires the assistance of enzymes collectively called chaperones. Among these, the chaperonins are 1-MDa ring-shaped oligomeric complexes that bind unfolded polypeptides and promote their folding within an isolated chamber in an ATP-dependen... | {
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"id": 4,
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{
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"solvent_or_medium": "biological milieu reaction medium",
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"electronic",
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] | As documented by Lopez T, Dalton K, Frydman J (2015) in Journal of Molecular Biology: "Protein folding in the cell requires the assistance of enzymes collectively called chaperones. Among these, the chaperonins are 1-MDa ring-shaped oligomeric complexes that bind unfolded polypeptides and promote their folding within a... | Direct kinetics, isotopic labeling of Mechanism and Function of Group II Chaperonins under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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46 | UCHEM-000046 | Mechanism(s) in Mechanistic insights into how CMG helicase facilitates replication past | What chemical principles, structures, or elementary mechanisms govern the mechanism(s) in Mechanistic insights into how CMG helicase facilitates replication past? | For Mechanistic insights into how CMG helicase facilitates replication past (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the mechanism(s) in Mechanistic insights into how ... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Mechanistic insights into how CMG helicase facilitates replication past), what chemical principles, structures, or elementary mechanisms govern the mechanism... | Context from DNA Repair (2017): Before leaving the house, it is a good idea to check for road closures that may affect the morning commute. Otherwise, one may encounter significant delays arriving at the destination. While this is commonly true, motorists may be able to consult a live interactive traffic map and pick a... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
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"electronic",
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"mechanism_discrimination",
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"pmid": "28554039",
"pmcid": "PMC9100966"
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47 | UCHEM-000047 | Underlying molecular mechanisms of APOBEC-mediated hypermutation phenotype | What chemical principles, structures, or elementary steps govern underlying molecular mechanisms of APOBEC-mediated hypermutation phenotype? | For Apolipoprotein B mRNA editing enzyme catalytic polypeptide-like family genes (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern underlying molecular mechanisms of APOBEC-mediated... | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Apolipoprotein B mRNA editing enzyme catalytic polypeptide-like family genes), what chemical principles, structures, or el... | Context from Cancer Science (2018): Cancer is currently viewed as a disease of evolving genomic instability and abnormal epigenomic modifications. Most solid cancers harbor oncogenic gene mutations driven by both extrinsic and intrinsic factors. Apolipoprotein B mRNA editing catalytic polypeptide-like family (APOBEC) e... | {
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"slug": "organic_mechanisms_and_synthesis_science"
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"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
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"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Gao J, Choudhry H, Cao W (2018) in Cancer Science: "Cancer is currently viewed as a disease of evolving genomic instability and abnormal epigenomic modifications. Most solid cancers harbor oncogenic gene mutations driven by both extrinsic and intrinsic factors. Apolipoprotein B mRNA editing catalytic p... | Direct kinetics, isotopic labeling of Apolipoprotein B mRNA editing enzyme catalytic polypeptide-like under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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48 | UCHEM-000048 | Immune epigenetic insight to COVID-19 infection | What chemical principles, structures, or elementary mechanisms govern the detailed mechanism? | For immune epigenetic insight to COVID-19 infection (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the detailed mechanism? | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for immune epigenetic insight to COVID-19 infection), what chemical principles, structures, or elementary mechanisms govern the detailed mechanism? | Context from Epigenomics (2021): Severe acute respiratory syndrome coronavirus-2 is a positive-sense RNA virus, a causal agent of ongoing COVID-19 pandemic. ACE2R methylation across three CpG sites (cg04013915, cg08559914, cg03536816) determines the host cell's entry. It regulates ACE2 expression by controlling the SIR... | {
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"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
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{
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... | [
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"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Jit BP, Qazi S, Arya R et al. (2021) in Epigenomics: "Severe acute respiratory syndrome coronavirus-2 is a positive-sense RNA virus, a causal agent of ongoing COVID-19 pandemic. ACE2R methylation across three CpG sites (cg04013915, cg08559914, cg03536816) determines the host cell's entry. It regulates ... | Direct kinetics, isotopic labeling of immune epigenetic insight to COVID-19 infection under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
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49 | UCHEM-000049 | Pathogenic Role of Immune Evasion and Integration of Human Papillomavirus in Oropharyngeal | What chemical principles, structures, or elementary mechanisms govern the associated mechanism? | For Pathogenic Role of Immune Evasion and Integration of Human (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the associated mechanism? | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Pathogenic Role of Immune Evasion and Integration of Human), what chemical principles, structures, or elementary mechanisms govern the associated mechanism? | Context from Microorganisms (2021): The incidence of oropharyngeal cancer (OPC) is increasing remarkably among all head and neck cancers, mainly due to its association with the human papillomavirus (HPV). Most HPVs are eliminated by the host's immune system; however, because HPV has developed an effective immune evasio... | {
"id": 1,
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"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
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"id": 4,
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"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Hatano T, Sano D, Takahashi H et al. (2021) in Microorganisms: "The incidence of oropharyngeal cancer (OPC) is increasing remarkably among all head and neck cancers, mainly due to its association with the human papillomavirus (HPV). Most HPVs are eliminated by the host's immune system; however, because... | Direct kinetics, isotopic labeling of Pathogenic Role of Immune Evasion and Integration under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
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50 | UCHEM-000050 | Mechanism allowing coordination of the fate of potential crossover sites half a chromosome | What chemical principles, structures, or elementary mechanisms govern the mechanism allowing coordination of the fate of potential crossover sites half a chromosome away? | For regulation of meiotic crossover distribution (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the mechanism allowing coordination of the fate of potential crossover sites ... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for regulation of meiotic crossover distribution), what chemical principles, structures, or elementary mechanisms govern the mechanism allowing coordination of t... | Context from Biochemical Society Transactions (2023): Meiotic crossovers, which are exchanges of genetic material between homologous chromosomes, are more evenly and distantly spaced along chromosomes than expected by chance. This is because the occurrence of one crossover reduces the likelihood of nearby crossover eve... | {
"id": 1,
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"reactive_intermediates",
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"id": 4,
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{
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"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Girard C, Zwicker D, Mercier R (2023) in Biochemical Society Transactions: "Meiotic crossovers, which are exchanges of genetic material between homologous chromosomes, are more evenly and distantly spaced along chromosomes than expected by chance. This is because the occurrence of one crossover reduces... | Direct kinetics, isotopic labeling of regulation of meiotic crossover distribution under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
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"entity_inferred_not_directly_observed"
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"organic_mechanisms_and_synthesis_science",
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"Girard C",
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51 | UCHEM-000051 | Structural and Kinetic Views of Molecular Chaperones in Multidomain Protein Folding | What chemical principles, structures, or elementary mechanisms govern the detailed mechanisms? | Regarding the reaction rates, activation barriers, and time-dependent dynamics of Structural and Kinetic Views of Molecular Chaperones in Multidomain Protein (organic mechanisms and synthesis science), what kinetic laws govern: What chemical principles, structures, or elementary mechanisms govern the detailed mechanism... | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Structural and Kinetic Views of Molecular Chaperones in Multidomain Protein), what chemical principles, structures, or elementary mechanisms govern ... | Context from International Journal of Molecular Sciences (2022): Despite recent developments in protein structure prediction, the process of the structure formation, folding, remains poorly understood. Notably, folding of multidomain proteins, which involves multiple steps of segmental folding, is one of the biggest qu... | {
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"reactive_intermediates",
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{
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"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
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] | As documented by Kawagoe S, Ishimori K, Saio T (2022) in International Journal of Molecular Sciences: "Despite recent developments in protein structure prediction, the process of the structure formation, folding, remains poorly understood. Notably, folding of multidomain proteins, which involves multiple steps of segme... | Direct kinetics, isotopic labeling of Structural and Kinetic Views of Molecular Chaperones under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
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] | review_article | explicit_gap | https://doi.org/10.3390/ijms23052485 | Kawagoe S, Ishimori K, Saio T (2022), "Structural and Kinetic Views of Molecular Chaperones in Multidomain Protein Folding", International Journal of Molecular Sciences, doi:10.3390/ijms23052485 | {
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52 | UCHEM-000052 | There in Periodic burst-like photochemical bond splitting in metal carbonyls | What chemical principles, structures, or elementary steps govern there in Periodic burst-like photochemical bond splitting in metal carbonyls? | Following electronic or vibrational excitation of Periodic burst-like photochemical bond splitting in metal carbonyls (organic mechanisms and synthesis science), what non-adiabatic relaxation pathways and state couplings explain: What chemical principles, structures, or elementary steps govern there in Periodic burst-l... | With respect to bond formation, bond cleavage in solution reaction medium (UV-visible or near-IR electromagnetic photoexcitation (hν); probed via kinetics, isotopic labeling for Periodic burst-like photochemical bond splitting in metal carbonyls), what chemical principles, structures, or elementary steps govern there i... | Context from Physical Chemistry Chemical Physics (2025): Recently, Schori et al. , Nat. Commun. , 2025, 16 , 4767 observed by time-resolved X-ray diffraction of Fe(CO) 5 , excited at 267 nm, a burst-like CO elimination, which was synchronized with a Fe-CO stretch vibration excited in the Franck-Condon region. Another r... | {
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{
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"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Fuß W (2025) in Physical Chemistry Chemical Physics: "Recently, Schori et al. , 2025, 16 , 4767 observed by time-resolved X-ray diffraction of Fe(CO) 5 , excited at 267 nm, a burst-like CO elimination, which was synchronized with a Fe-CO stretch vibration excited in the Franck-Condon region. Another re... | Direct kinetics, isotopic labeling of Periodic burst-like photochemical bond splitting in metal under photoexcited conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
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"competing_mechanisms_fit_current_data",
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] | review_article | explicit_gap | https://doi.org/10.1039/d5cp02773j | Fuß W (2025), "Periodic burst-like photochemical bond splitting in metal carbonyls and cyclohexadiene", Physical Chemistry Chemical Physics, doi:10.1039/d5cp02773j | {
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53 | UCHEM-000053 | Or not it can offer strategic advantages in Changing Perspectives on the Strategic | What mechanistic or structural evidence establishes whether or not it can offer strategic advantages in Changing Perspectives on the Strategic Use of Microwave Heating? | Regarding the reaction rates, activation barriers, and time-dependent dynamics of Changing Perspectives on the Strategic Use of Microwave Heating (organic mechanisms and synthesis science), what kinetic laws govern: What mechanistic or structural evidence establishes whether or not it can offer strategic advantages in ... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Changing Perspectives on the Strategic Use of Microwave Heating), what mechanistic or structural evidence establishes whether or not it can offer strategic a... | Context from Chemical Record (2018): This Personal Account describes collaborative investigations into apocryphal microwave effects in organic chemistry. Focused research on microwave-assisted organic synthesis has been fraught with confusion, controversy, and misinformation. Microwave heating is an undoubtedly useful ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | active_debate | 0.92 | kinetics | [
"kinetics",
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{
"name": "chemical system in Changing Perspectives on the Strategic Use of Microwave Heating",
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{
"name": "tetrahydrofuran (THF)",
"role... | [
"bond_formation",
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"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
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] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
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"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Dudley GB, Stiegman AE (2018) in Chemical Record: "This Personal Account describes collaborative investigations into apocryphal microwave effects in organic chemistry. Focused research on microwave-assisted organic synthesis has been fraught with confusion, controversy, and misinformation. Microwave he... | Direct kinetics, isotopic labeling of Changing Perspectives on the Strategic Use under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1002/tcr.201700044 | Dudley GB, Stiegman AE (2018), "Changing Perspectives on the Strategic Use of Microwave Heating in Organic Synthesis", Chemical Record, doi:10.1002/tcr.201700044 | {
"source_id": "SRC-CHEM-00065",
"doi": "10.1002/tcr.201700044",
"pmid": "29044842",
"pmcid": null
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"Dudley GB",
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54 | UCHEM-000054 | Mechanism in Changing the absolute configuration of atropisomeric bisnaphthols (BINOLs) | What chemical principles, structures, or elementary steps govern the mechanism in Changing the absolute configuration of atropisomeric bisnaphthols (BINOLs)? | When controlling three-dimensional stereochemistry in Changing the absolute configuration of atropisomeric bisnaphthols (BINOLs) (organic mechanisms and synthesis science), what chiral induction factors answer: What chemical principles, structures, or elementary steps govern the mechanism in Changing the absolute confi... | With respect to bond formation, bond cleavage in solution reaction medium (applied magnetic field (B0) with radiofrequency/microwave spin manipulation; probed via kinetics, isotopic labeling for Changing the absolute configuration of atropisomeric bisnaphthols (BINOLs)), what chemical principles, structures, or element... | Context from Chemical Communications (2025): Bisnaphthol (BINOL) is a ubiquitous core skeleton in versatile chiral catalysts and ligands for transition metals, and this representative atropisomeric structure also serves as a building block in various optically active natural products. Due to the high rotational barrier... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | stereocontrol | [
"stereocontrol",
"kinetics",
"mechanism",
"selectivity"
] | [
{
"name": "chemical system in Changing the absolute configuration of atropisomeric bisnaphthols (BINOLs)",
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"formula": null,
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{
"name": "benzene / aromatic are... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
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] | [
"ambient"
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"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Wu Y, Zhu C (2025) in Chemical Communications: "Bisnaphthol (BINOL) is a ubiquitous core skeleton in versatile chiral catalysts and ligands for transition metals, and this representative atropisomeric structure also serves as a building block in various optically active natural products. Due to the hig... | Direct kinetics, isotopic labeling of Changing the absolute configuration of atropisomeric bisnaphthols under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1039/d5cc01026h | Wu Y, Zhu C (2025), "Changing the absolute configuration of atropisomeric bisnaphthols (BINOLs)", Chemical Communications, doi:10.1039/d5cc01026h | {
"source_id": "SRC-CHEM-00066",
"doi": "10.1039/d5cc01026h",
"pmid": "40111747",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
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"Wu Y",
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55 | UCHEM-000055 | Especially those implying kinetically disfavored (anti-Markovnikov and anti-Baldwin) routes | What chemical mechanisms and structural factors govern especially those implying kinetically disfavored (anti-Markovnikov and anti-Baldwin) routes? | Regarding the reaction rates, activation barriers, and time-dependent dynamics of Electrophilic and nucleophilic enzymatic cascade reactions in biosynthesis (organic mechanisms and synthesis science), what kinetic laws govern: What chemical mechanisms and structural factors govern especially those implying kinetically ... | With respect to cyclization, metabolic or biochemical transformation in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Electrophilic and nucleophilic enzymatic cascade reactions in biosynthesis), what chemical mechanisms and structural facto... | Context from Natural Product Reports (2012): The biosynthesis of cyclic terpenoids and polyethers involves enzyme-initiated cascade reactions for ring formation. While the former are obtained by electrophilic cascades through carbenium ions as intermediates, cyclic polyethers are formed by nucleophilic cascade reaction... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 5,
"level": 5,
"name": "L5: Foundational or Grand"
} | open | established_open_question | 0.95 | kinetics | [
"kinetics",
"intermediate",
"mechanism",
"stereocontrol"
] | [
{
"name": "chemical system in Electrophilic and nucleophilic enzymatic cascade reactions in biosynthesis",
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{
"name": "tetrahydrofuran (THF)"... | [
"cyclization",
"metabolic_or_biochemical_transformation",
"bond_formation",
"bond_cleavage"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"biological",
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
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"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Ueberbacher BT, Hall M, Faber K (2012) in Natural Product Reports: "The biosynthesis of cyclic terpenoids and polyethers involves enzyme-initiated cascade reactions for ring formation. While the former are obtained by electrophilic cascades through carbenium ions as intermediates, cyclic polyethers are... | Direct kinetics, isotopic labeling of Electrophilic and nucleophilic enzymatic cascade reactions under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1039/c2np00078d | Ueberbacher BT, Hall M, Faber K (2012), "Electrophilic and nucleophilic enzymatic cascade reactions in biosynthesis", Natural Product Reports, doi:10.1039/c2np00078d | {
"source_id": "SRC-CHEM-00067",
"doi": "10.1039/c2np00078d",
"pmid": "22307731",
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] | 2,012 | [
"Ueberbacher BT",
"Hall M",
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56 | UCHEM-000056 | Selectivity in Functionalized Graphene Surfaces for Selective Gas Sensing | What molecular mechanisms, structural factors, or elementary steps determine selectivity in Functionalized Graphene Surfaces for Selective Gas Sensing? | In organic mechanisms and synthesis science transformations involving Functionalized Graphene Surfaces for Selective Gas Sensing, how do competing transition states and steric/electronic effects control outcome selectivity: What molecular mechanisms, structural factors, or elementary steps determine selectivity in Func... | With respect to bond formation, bond cleavage in surface reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Functionalized Graphene Surfaces for Selective Gas Sensing), what molecular mechanisms, structural factors, or elementary steps determine selectivity in Funct... | Context from ACS Omega (2020): Environmental monitoring through gas sensors is paramount for the safety and security of industrial workers and for ecological protection. Graphene is among the most promising materials considered for next-generation gas sensing due to its properties such as mechanical strength and flexib... | {
"id": 1,
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"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | selectivity | [
"selectivity",
"reactivity",
"mechanism",
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{
"name": "chemical system in Functionalized Graphene Surfaces for Selective Gas Sensing",
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{
"name": "water (H2O)",
"role": "solvent_or_... | [
"bond_formation",
"bond_cleavage",
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"organic mechanism and stereoselective bond construction"
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"surface",
"solution",
"liquid"
] | [
"ambient"
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"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "surface reaction medium",
"excitation_or_sti... | [
"electronic",
"atomic",
"molecular"
] | As documented by Alzate-Carvajal N, Luican-Mayer A (2020) in ACS Omega: "Environmental monitoring through gas sensors is paramount for the safety and security of industrial workers and for ecological protection. Graphene is among the most promising materials considered for next-generation gas sensing due to its propert... | Direct kinetics, isotopic labeling of Functionalized Graphene Surfaces for Selective Gas Sensing under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1021/acsomega.0c02861 | Alzate-Carvajal N, Luican-Mayer A (2020), "Functionalized Graphene Surfaces for Selective Gas Sensing", ACS Omega, doi:10.1021/acsomega.0c02861 | {
"source_id": "SRC-CHEM-00068",
"doi": "10.1021/acsomega.0c02861",
"pmid": "32905337",
"pmcid": "PMC7469114"
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57 | UCHEM-000057 | Cyclization mechanisms of some terpene synthases | What chemical principles, structures, or elementary mechanisms govern the cyclization mechanisms of some terpene synthases? | When controlling three-dimensional stereochemistry in Mechanistic investigations of hirsutene biosynthesis catalyzed by a chimeric (organic mechanisms and synthesis science), what chiral induction factors answer: What chemical principles, structures, or elementary mechanisms govern the cyclization mechanisms of some te... | With respect to cyclization, metabolic or biochemical transformation in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Mechanistic investigations of hirsutene biosynthesis catalyzed by a chimeric), what chemical principles, structures, or elementary mec... | Context from Fungal Genetics and Biology : FG & B (2022): The high efficiency and elegance of terpene synthases is fascinating in constructing the molecular skeleton of complicated terpenoids with multiple chiral centers. Although the rapid development of sequencing technology has led to the discovery of an increasing ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
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"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
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"level": 5,
"name": "L5: Foundational or Grand"
} | open | established_open_question | 0.95 | stereocontrol | [
"stereocontrol",
"mechanism",
"selectivity"
] | [
{
"name": "chemical system in Mechanistic investigations of hirsutene biosynthesis catalyzed by a chimeric sesquiterpene synthase",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
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{
"name"... | [
"cyclization",
"metabolic_or_biochemical_transformation",
"bond_formation",
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"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Wang Q, Liu JK, Zhao Q et al. (2022) in Fungal Genetics and Biology : FG & B: "The high efficiency and elegance of terpene synthases is fascinating in constructing the molecular skeleton of complicated terpenoids with multiple chiral centers. Although the rapid development of sequencing technology has ... | Direct kinetics, isotopic labeling of Mechanistic investigations of hirsutene biosynthesis catalyzed under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1016/j.fgb.2022.103700 | Wang Q, Liu JK, Zhao Q et al. (2022), "Mechanistic investigations of hirsutene biosynthesis catalyzed by a chimeric sesquiterpene synthase from Steccherinum ochraceum", Fungal Genetics and Biology : FG & B, doi:10.1016/j.fgb.2022.103700 | {
"source_id": "SRC-CHEM-00069",
"doi": "10.1016/j.fgb.2022.103700",
"pmid": "35504456",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
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"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
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"organic_mechanisms_and_synthesis_science",
"stereocontrol",
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"Wang Q",
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"Zhao Q",
"He QL"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
58 | UCHEM-000058 | Techniques to distinguish between chiral molecules containing more than one stereocenter | What molecular mechanisms, structural factors, or elementary steps determine techniques to distinguish between chiral molecules containing more than one stereocenter through the use of optical techniques? | When controlling three-dimensional stereochemistry in Determination of Enantiomeric Excess and Diastereomeric Excess via Optical (organic mechanisms and synthesis science), what chiral induction factors answer: What molecular mechanisms, structural factors, or elementary steps determine techniques to distinguish betwee... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Determination of Enantiomeric Excess and Diastereomeric Excess via Optical), what molecular mechanisms, structural factors, or elementary steps determine tec... | Context from Organic Chemistry Frontiers (2023): Characterization of chiral molecules in solution is paramount for measuring reaction success. However, techniques to distinguish between chiral molecules containing more than one stereocenter through the use of optical techniques remains a challenge. Herein, we report a ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | stereocontrol | [
"stereocontrol",
"speciation",
"mechanism",
"selectivity"
] | [
{
"name": "chemical system in Determination of Enantiomeric Excess and Diastereomeric Excess via Optical Methods",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "acetic acid / ... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Moor SR, Howard JR, Herrera BT et al. (2023) in Organic Chemistry Frontiers: "Characterization of chiral molecules in solution is paramount for measuring reaction success. However, techniques to distinguish between chiral molecules containing more than one stereocenter through the use of optical techni... | Direct kinetics, isotopic labeling of Determination of Enantiomeric Excess and Diastereomeric Excess under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1039/d2qo01444k | Moor SR, Howard JR, Herrera BT et al. (2023), "Determination of Enantiomeric Excess and Diastereomeric Excess via Optical Methods. Application to α-methyl-β-hydroxy-carboxylic acids", Organic Chemistry Frontiers, doi:10.1039/d2qo01444k | {
"source_id": "SRC-CHEM-00070",
"doi": "10.1039/d2qo01444k",
"pmid": "37636898",
"pmcid": "PMC10456989"
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
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"organic_mechanisms_and_synthesis_science",
"stereocontrol",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,023 | [
"Moor SR",
"Howard JR",
"Herrera BT",
"McVeigh MS"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
59 | UCHEM-000059 | Effectiveness in pharmaceutical industry's multifaceted role in neglected tropical disease control | What chemical principles, structures, or elementary mechanisms govern the effectiveness in pharmaceutical industry's multifaceted role in neglected tropical disease control? | For pharmaceutical industry's multifaceted role in neglected tropical disease control (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the effectiveness in pharmaceutical indu... | With respect to bond formation, bond cleavage in surface reaction medium (applied magnetic field (B0) with radiofrequency/microwave spin manipulation; probed via kinetics, isotopic labeling for pharmaceutical industry's multifaceted role in neglected tropical disease control), what chemical principles, structures, or e... | Context from Tropical Medicine and Health (2026): Background Neglected tropical diseases (NTDs) represent a profound market failure wherein pharmaceutical innovation systematically underserves populations with the greatest need. Despite affecting over 1.7 billion people globally, NTDs receive less than 2% of pharmaceut... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in pharmaceutical industry's multifaceted role in neglected tropical disease control",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "benzene / aroma... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"surface",
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "surface reaction medium",
"excitation_or_sti... | [
"electronic",
"atomic",
"molecular"
] | As documented by Sanchez JD (2026) in Tropical Medicine and Health: "Background Neglected tropical diseases (NTDs) represent a profound market failure wherein pharmaceutical innovation systematically underserves populations with the greatest need. Despite affecting over 1.7 billion people globally, NTDs receive less th... | Direct kinetics, isotopic labeling of pharmaceutical industry's multifaceted role in neglected tropical under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1186/s41182-026-00951-5 | Sanchez JD (2026), "The pharmaceutical industry's multifaceted role in neglected tropical disease control: from market failure to global health innovation", Tropical Medicine and Health, doi:10.1186/s41182-026-00951-5 | {
"source_id": "SRC-CHEM-00071",
"doi": "10.1186/s41182-026-00951-5",
"pmid": "42032702",
"pmcid": "PMC13169945"
} | cc by-nc-nd | verbatim_allowed | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
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{
"id": 12,
"name": "open_access_chemical_review_corpus",
"display_name": "Open-Access Chemical Review & Perspect... | [
"organic_mechanisms_and_synthesis_science",
"mechanism",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,026 | [
"Sanchez JD"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
60 | UCHEM-000060 | Reactive oxygen species | What chemical principles, structures, or elementary mechanisms govern how to what degree ROS could participate as signaling molecules controlling fundamental and developmentally relevant cellular processes such as proliferation, differentiation, and death in Reactive oxygen species? | For Reactive oxygen species (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern how to what degree ROS could participate as signaling molecules controlling fundamental and develo... | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Reactive oxygen species), what chemical principles, structures, or elementary mechanisms govern how to what degree ROS could participate as signa... | Context from Free Radical Biology and Medicine (2010): Reactive oxygen species (ROS), mostly derived from mitochondrial activity, can damage various macromolecules and consequently cause cell death. This ROS activity has been characterized in vitro, and correlative evidence suggests a role in various pathological condi... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Reactive oxygen species",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "hydroxyl radical (•OH)",
"role": "intermediate",
"formula": "HO",... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"biological",
"ambient"
] | {
"temperature": "physiological temperature (310 K / 37 °C)",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "biological milieu reaction medium",
"excitation_or_stimulus": "thermal activa... | [
"electronic",
"atomic",
"molecular"
] | As documented by Hernández-García D, Wood CD, Castro-Obregón S et al. (2010) in Free Radical Biology and Medicine: "Reactive oxygen species (ROS), mostly derived from mitochondrial activity, can damage various macromolecules and consequently cause cell death. This ROS activity has been characterized in vitro, and corre... | Direct kinetics, isotopic labeling of Reactive oxygen species under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1016/j.freeradbiomed.2010.03.020 | Hernández-García D, Wood CD, Castro-Obregón S et al. (2010), "Reactive oxygen species: A radical role in development?", Free Radical Biology and Medicine, doi:10.1016/j.freeradbiomed.2010.03.020 | {
"source_id": "SRC-CHEM-00072",
"doi": "10.1016/j.freeradbiomed.2010.03.020",
"pmid": "20353819",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
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] | [
"organic_mechanisms_and_synthesis_science",
"mechanism",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,010 | [
"Hernández-García D",
"Wood CD",
"Castro-Obregón S",
"Covarrubias L"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
61 | UCHEM-000061 | Difficulties and challenges of defects for NO removal | What chemical principles, structures, or elementary steps govern difficulties and challenges of defects for NO removal? | For Defect in photocatalysts for efficient NO removal (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern difficulties and challenges of defects for NO removal? | With respect to bond formation, bond cleavage in surface reaction medium (UV-visible or near-IR electromagnetic photoexcitation (hν); probed via kinetics, isotopic labeling for Defect in photocatalysts for efficient NO removal), what chemical principles, structures, or elementary steps govern difficulties and challenge... | Context from Environmental Research (2026): The environmental pollution caused by NO has gained global visibility. Currently, photocatalytic removal of ppb-level NO is one of the relatively economical and effective methods, with minimal impact on the environment. Numerous studies have proved that defect engineering can... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Defect in photocatalysts for efficient NO removal",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "iron catalytic center (Fe)",
"role": "catal... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"surface",
"solution",
"liquid"
] | [
"photoexcited",
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "surface reaction medium",
"excitation_or_sti... | [
"electronic",
"atomic",
"molecular"
] | As documented by Zhang K, Tian J, Wang C (2026) in Environmental Research: "The environmental pollution caused by NO has gained global visibility. Currently, photocatalytic removal of ppb-level NO is one of the relatively economical and effective methods, with minimal impact on the environment." Resolving this mechanis... | Direct kinetics, isotopic labeling of Defect in photocatalysts for efficient NO removal under photoexcited conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1016/j.envres.2025.123540 | Zhang K, Tian J, Wang C (2026), "Defect in photocatalysts for efficient NO removal: from reaction mechanism to rational design", Environmental Research, doi:10.1016/j.envres.2025.123540 | {
"source_id": "SRC-CHEM-00073",
"doi": "10.1016/j.envres.2025.123540",
"pmid": "41386447",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
}
] | [
"organic_mechanisms_and_synthesis_science",
"mechanism",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,026 | [
"Zhang K",
"Tian J",
"Wang C"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
62 | UCHEM-000062 | Structure-activity relationships and mechanisms of action of PGAs | What chemical principles, structures, or elementary mechanisms govern structure-activity relationships and mechanisms of action of PGAs? | For Structure, synthesis and biological properties of the pentacyclic guanidinium (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern structure-activity relationships and mechani... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Structure, synthesis and biological properties of the pentacyclic guanidinium), what chemical principles, structures, or elementary mechanisms govern structu... | Context from Bioorganic & Medicinal Chemistry (2017): The pentacyclic guanidinium alkaloids (PGAs) are a family of marine natural products that possess a polycyclic guanidine-containing core and a long alkyl chain tethered spermidine-derived tail that is rarely observed in other natural products. These natural products... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in Structure, synthesis and biological properties of the pentacyclic guanidinium alkaloids",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "tetrahydr... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Shi Y, Moazami Y, Pierce JG (2017) in Bioorganic & Medicinal Chemistry: "The pentacyclic guanidinium alkaloids (PGAs) are a family of marine natural products that possess a polycyclic guanidine-containing core and a long alkyl chain tethered spermidine-derived tail that is rarely observed in other natu... | Direct kinetics, isotopic labeling of Structure, synthesis and biological properties under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1016/j.bmc.2017.03.015 | Shi Y, Moazami Y, Pierce JG (2017), "Structure, synthesis and biological properties of the pentacyclic guanidinium alkaloids", Bioorganic & Medicinal Chemistry, doi:10.1016/j.bmc.2017.03.015 | {
"source_id": "SRC-CHEM-00074",
"doi": "10.1016/j.bmc.2017.03.015",
"pmid": "28404523",
"pmcid": "PMC5494716"
} | Publisher Standard License | paraphrase_only | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
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] | [
"organic_mechanisms_and_synthesis_science",
"mechanism",
"physical_organic_chemistry",
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] | 2,017 | [
"Shi Y",
"Moazami Y",
"Pierce JG"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
63 | UCHEM-000063 | Substrate binding and the reaction mechanism of this enzyme family in understanding | What chemical mechanisms and structural factors govern substrate binding and the reaction mechanism of this enzyme family in understanding of oleate hydratases and their application in industrial processes? | During catalytic or functional operation of understanding of oleate hydratases and their application in industrial processes (organic mechanisms and synthesis science), what is the true resting or turnover-limiting active chemical species: What chemical mechanisms and structural factors govern substrate binding and the... | With respect to electron transfer, metabolic or biochemical transformation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for understanding of oleate hydratases and their application in industrial processes), what chemical mechanisms and structu... | Context from Microbial Cell Factories (2022): Fatty acid hydratases are unique to microorganisms. Their native function is the oxidation of unsaturated C-C bonds to enable detoxification of environmental toxins. Within this enzyme family, the oleate hydratases (Ohys), which catalyze the hydroxylation of oleic acid to 1... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 5,
"level": 5,
"name": "L5: Foundational or Grand"
} | open | established_open_question | 0.95 | active_state | [
"active_state",
"mechanism",
"stereocontrol",
"selectivity"
] | [
{
"name": "chemical system in understanding of oleate hydratases and their application in industrial processes",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
"cas_rn": null,
"state_descriptor": "reactive_intermediate"
},
{
"name": "ethanol / hydrox... | [
"electron_transfer",
"metabolic_or_biochemical_transformation",
"bond_formation",
"bond_cleavage"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
] | [
"ambient"
] | {
"temperature": "298 K (ambient laboratory temperature) or reaction-specific thermal window",
"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Prem S, Helmer CPO, Dimos N et al. (2022) in Microbial Cell Factories: "Fatty acid hydratases are unique to microorganisms. Their native function is the oxidation of unsaturated C-C bonds to enable detoxification of environmental toxins." Resolving this active state question is challenged by competing ... | Direct kinetics, isotopic labeling of understanding of oleate hydratases and their application under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
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64 | UCHEM-000064 | Mechanism of these few available versions in Review on the Ugi Multicomponent Reaction | What chemical mechanisms and structural factors govern the mechanism of these few available versions in Review on the Ugi Multicomponent Reaction Mechanism? | When controlling three-dimensional stereochemistry in Review on the Ugi Multicomponent Reaction Mechanism (organic mechanisms and synthesis science), what chiral induction factors answer: What chemical mechanisms and structural factors govern the mechanism of these few available versions in Review on the Ugi Multicompo... | With respect to bond formation, bond cleavage in solution reaction medium (UV-visible or near-IR electromagnetic photoexcitation (hν); probed via kinetics, isotopic labeling for Review on the Ugi Multicomponent Reaction Mechanism), what chemical mechanisms and structural factors govern the mechanism of these few availa... | Context from ACS Omega (2020): In the present mini-review we discuss the findings, controversies, and gaps observed for the Ugi four-component reaction. The Ugi multicomponent reaction, performed by mixing an aldehyde, an amine, a carboxylic acid, and an isocyanide, is among the most important isocyanide-based multicom... | {
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65 | UCHEM-000065 | Real-time "action" details regarding the bidirectional cis - trans isomerization, proton transfer | What chemical principles, structures, or elementary mechanisms govern the real-time "action" details regarding the bidirectional cis - trans isomerization, proton transfer, and intermediate states? | For Photoswitchable Fluorescent Proteins (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the real-time "action" details regarding the bidirectional cis - trans isomerization,... | With respect to proton transfer, photoisomerization in solid-state lattice or crystalline solid interface (ultrafast femtosecond/attosecond optical pump-probe laser excitation; probed via kinetics, isotopic labeling for Photoswitchable Fluorescent Proteins), what chemical principles, structures, or elementary mechanism... | Context from International Journal of Molecular Sciences (2022): The advancement of super-resolution imaging (SRI) relies on fluorescent proteins with novel photochromic properties. Using light, the reversibly switchable fluorescent proteins (RSFPs) can be converted between bright and dark states for many photocycles a... | {
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66 | UCHEM-000066 | Mechanism of Type I Framework Complex | How should such “hybrid” PSs be classified in Type I Framework Complex? | For Type I Framework Complex (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: How should such “hybrid” PSs be classified in Type I Framework Complex? | With respect to electron transfer, bond formation in solution reaction medium (thermal activation under photoexcited conditions; probed via kinetics, isotopic labeling for Type I Framework Complex), how should such “hybrid” PSs be classified in Type I Framework Complex? | Context from Research (2026): Although type I and type II photodynamic pathways are mechanistically distinct, they are not mutually exclusive [32]. In practice, many PSs can engage both routes from the excited state—producing 1O2 via ET while also generating radical species (e.g., O2•− and •OH) through electron transfe... | {
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67 | UCHEM-000067 | Theoretical Investigation on the Mechanism of Ni0(enolate)–Ate Complex-Catalyzed C(sp2)–F Bond Activation | What thermodynamic or kinetic factors drive the preferential activation of the C(sp2)–F bond over the C(sp2)–OMe bond? | When controlling three-dimensional stereochemistry in Theoretical Investigation on the Mechanism of Ni0(enolate)–Ate Complex-Catalyzed C(sp2)–F (organic mechanisms and synthesis science), what chiral induction factors answer: What thermodynamic or kinetic factors drive the preferential activation of the C(sp2)–F bond ... | With respect to proton transfer, bond formation in solution reaction medium (applied magnetic field (B0) with radiofrequency/microwave spin manipulation; probed via kinetics, isotopic labeling for Theoretical Investigation on the Mechanism of Ni0(enolate)–Ate Complex-Catalyzed C(sp2)–F), what thermodynamic or kinetic f... | Context from JACS Au (2026): Indanones are versatile building blocks in organic synthesis and are commonly found in pharmaceuticals and biologically active compounds. − In general, the indanones undergo deprotonation by bases (NaO t Bu) to generate an active nucleophilic enolate species, which is a key intermediate in ... | {
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68 | UCHEM-000068 | Influence on W/O emulsion stability in Internal-salt-regulated stability of brine-in-oil emulsions | What chemical principles, structures, or elementary mechanisms govern the influence on W/O emulsion stability in Internal-salt-regulated stability of brine-in-oil emulsions? | During catalytic or functional operation of Internal-salt-regulated stability of brine-in-oil emulsions (organic mechanisms and synthesis science), what is the true resting or turnover-limiting active chemical species: What chemical principles, structures, or elementary mechanisms govern the influence on W/O emulsion s... | With respect to adsorption, bond formation in aqueous solution or buffered electrolyte (H2O) (thermal activation under interfacial conditions; probed via kinetics, isotopic labeling for Internal-salt-regulated stability of brine-in-oil emulsions), what chemical principles, structures, or elementary mechanisms govern th... | Context from RSC Advances (2026): Water-in-oil (W/O) emulsions are widely encountered in petroleum production, separation processes, and functional emulsion formulations. In practical systems, the dispersed aqueous phase commonly contains dissolved salts, whereas their influence on W/O emulsion stability is still not f... | {
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69 | UCHEM-000069 | Imaging quantum chemistry in action with quantum attomicroscopy | What chemical principles, structures, or elementary mechanisms govern real-time observation? | For Imaging quantum chemistry in action with quantum attomicroscopy (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern real-time observation? | With respect to bond formation, bond cleavage in biological milieu reaction medium (ultrafast femtosecond/attosecond optical pump-probe laser excitation; probed via kinetics, isotopic labeling for Imaging quantum chemistry in action with quantum attomicroscopy), what chemical principles, structures, or elementary mecha... | Context from Communications Chemistry (2026): Understanding how quantum electron and nuclei motions drive biomolecular reactions is a foundational challenge in quantum chemistry and biology. While ultrafast charge migration in DNA is theorized to influence genome stability and signaling, real-time observation remains e... | {
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70 | UCHEM-000070 | Mechanistic basis of these effects in Structure-Activity Relationships in Bioactive Deep Eutectic Systems | What chemical principles, structures, or elementary mechanisms govern mechanistic basis of these effects in Structure-Activity Relationships in Bioactive Deep Eutectic Systems? | For Structure-Activity Relationships in Bioactive Deep Eutectic Systems (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern mechanistic basis of these effects in Structure-Activi... | With respect to bond formation, bond cleavage in ionic liquid or deep eutectic solvent medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Structure-Activity Relationships in Bioactive Deep Eutectic Systems), what chemical principles, structures, or elementary mechanisms gove... | Context from Pharmaceutics (2026): Deep eutectic systems (DESs) have evolved from sustainable solvent alternatives to promising bioactive platforms with reported antimicrobial, anti-inflammatory, regenerative, cryoprotective, and cytoprotective properties. However, despite the growing number of biological studies, the ... | {
"id": 1,
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71 | UCHEM-000071 | Prognostic significance for biochemical recurrence (BCR) after radical prostatectomy | What chemical principles, structures, or elementary mechanisms govern prognostic significance for biochemical recurrence (BCR) after radical prostatectomy? | For Examining the Association between ERG/PTEN Expression and Biochemical Recurrence (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern prognostic significance for biochemical r... | With respect to rearrangement, bond formation in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Examining the Association between ERG/PTEN Expression and Biochemical Recurrence), what chemical principles, structures, or elementary mechanisms govern prog... | Context from European Journal of Organic Chemistry (2025): Background ETS -related gene ( ERG ) rearrangement and tensin homolog ( PTEN ) deletion are common molecular alterations in prostate cancer. Their prognostic significance for biochemical recurrence (BCR) after radical prostatectomy is not fully understood. This... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
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"name": "chemical system in Examining the Association between ERG/PTEN Expression and Biochemical Recurrence",
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"electronic",
"atomic",
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] | As documented by Zhu W, Chen W (2025) in European Journal of Organic Chemistry: "Background ETS -related gene ( ERG ) rearrangement and tensin homolog ( PTEN ) deletion are common molecular alterations in prostate cancer. Their prognostic significance for biochemical recurrence (BCR) after radical prostatectomy is not ... | Direct kinetics, isotopic labeling of Examining the Association between ERG/PTEN Expression under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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"direct_observation"
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"Zhu W",
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72 | UCHEM-000072 | Pivotal role of reaction intermediates and interfacial environment during intermediate behaviors on alkaline | What chemical principles, structures, or elementary mechanisms govern the pivotal role of reaction intermediates and interfacial environment during intermediate behaviors on alkaline HOR? | At the phase boundary or electrical double layer of Intermediate Behaviors and Design Strategies of Platinum Group Metal-Based (organic mechanisms and synthesis science), how do local solvation and interfacial fields govern: What chemical principles, structures, or elementary mechanisms govern the pivotal role of react... | With respect to bond formation, bond cleavage in interface reaction medium (applied electrochemical voltage bias / interfacial electric field; probed via kinetics, isotopic labeling for Intermediate Behaviors and Design Strategies of Platinum Group Metal-Based), what chemical principles, structures, or elementary mecha... | Context from Advanced Materials (2025): Hydrogen oxidation reaction (HOR) can effectively convert the hydrogen energy through the hydrogen fuel cells, which plays an increasingly important role in the renewable hydrogen cycle. Nevertheless, when the electrolyte pH changes from acid to base, even with platinum group met... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | active_debate | 0.92 | interface | [
"interface",
"kinetics",
"mechanism",
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{
"name": "chemical system in Intermediate Behaviors and Design Strategies of Platinum Group Metal-Based Alkaline",
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"name": "platinum cata... | [
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"excitation_or_stimulu... | [
"electronic",
"atomic",
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] | As documented by Su L, Wu H, Zhang S et al. (2025) in Advanced Materials: "Hydrogen oxidation reaction (HOR) can effectively convert the hydrogen energy through the hydrogen fuel cells, which plays an increasingly important role in the renewable hydrogen cycle. Nevertheless, when the electrolyte pH changes from acid to... | Direct kinetics, isotopic labeling of Intermediate Behaviors and Design Strategies of Platinum under electrochemical bias conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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"Su L",
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73 | UCHEM-000073 | Regulatory role of O-GlcNAc (From Fringe to the Mainstream) | What chemical principles, structures, or elementary mechanisms govern the regulatory role of O-GlcNAc? | For From Fringe to the Mainstream (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the regulatory role of O-GlcNAc? | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for From Fringe to the Mainstream), what chemical principles, structures, or elementary mechanisms govern the regulatory ro... | Context from Molecular & Cellular Proteomics : MCP (2024): O-GlcNAcylation was identified in the 1980s by Torres and Hart and modifies thousands of cellular proteins, yet the regulatory role of O-GlcNAc is still poorly understood compared to the abundance of mechanistic information known for other cycling post-translat... | {
"id": 1,
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"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
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{
"name": "chemical system in From Fringe to the Mainstream",
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{
"name": "phosphoric acid / phosphate (H3PO4)",
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"... | [
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] | [
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"biological",
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"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"... | [
"electronic",
"atomic",
"molecular"
] | As documented by Udeshi ND, Hart GW, Slawson C (2024) in Molecular & Cellular Proteomics : MCP: "O-GlcNAcylation was identified in the 1980s by Torres and Hart and modifies thousands of cellular proteins, yet the regulatory role of O-GlcNAc is still poorly understood compared to the abundance of mechanistic information... | Direct kinetics, isotopic labeling of From Fringe to the Mainstream under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
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74 | UCHEM-000074 | S N 1-like pathways proceeding via the solvent-separated ion pair, also known | What chemical principles, structures, or elementary mechanisms govern the S N 1-like pathways proceeding via the solvent-separated ion pair, also known as the glycosyl cation? | When controlling three-dimensional stereochemistry in Characterization of Elusive Reaction Intermediates Using Infrared Ion Spectroscopy (organic mechanisms and synthesis science), what chiral induction factors answer: What chemical principles, structures, or elementary mechanisms govern the S N 1-like pathways proceed... | With respect to metabolic or biochemical transformation, bond formation in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Characterization of Elusive Reaction Intermediates Using Infrared Ion Spectroscopy), what chemical principles, structures, or eleme... | Context from Accounts of Chemical Research (2022): A detailed understanding of the reaction mechanism(s) leading to stereoselective product formation is crucial to understanding and predicting product formation and driving the development of new synthetic methodology. One way to improve our understanding of reaction me... | {
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"id": 4,
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"excitation_or_st... | [
"electronic",
"atomic",
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75 | UCHEM-000075 | Operational stability of perovskite solar cells and modules | What chemical principles, structures, or elementary mechanisms govern operational stability of perovskite solar cells and modules? | For Long-Term Stable Perovskite Solar Cells (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern operational stability of perovskite solar cells and modules? | With respect to bond formation, bond cleavage in solid-state lattice or crystalline solid interface (applied magnetic field (B0) with radiofrequency/microwave spin manipulation; probed via kinetics, isotopic labeling for Long-Term Stable Perovskite Solar Cells), what chemical principles, structures, or elementary mecha... | Context from Advanced Science (2024): It is certain that perovskite materials must be a game-changer in the solar industry as long as their stability reaches a level comparable with the lifetime of a commercialized Si photovoltaic. However, the operational stability of perovskite solar cells and modules still remains u... | {
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"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solid-state lattice or crystalline solid inter... | [
"electronic",
"atomic",
"molecular"
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"Choi M"
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76 | UCHEM-000076 | Fate and effects of chiral pesticides such as CFs that arise due | What chemical principles, structures, or elementary mechanisms govern the fate and effects of chiral pesticides such as CFs that arise due to their stereoselectivity in review on the stereospecific fate and effects of chiral? | When controlling three-dimensional stereochemistry in review on the stereospecific fate and effects of chiral (organic mechanisms and synthesis science), what chiral induction factors answer: What chemical principles, structures, or elementary mechanisms govern the fate and effects of chiral pesticides such as CFs that... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for review on the stereospecific fate and effects of chiral), what chemical principles, structures, or elementary mechanisms govern the fate and effects of chira... | Context from Science of The Total Environment (2021): The production and use of chiral pesticides are triggered by the need for more complex molecules capable of effectively combating a greater spectrum of pests and crop diseases, while sustaining high production yields. Currently, chiral pesticides comprise about 30% ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | stereocontrol | [
"stereocontrol",
"selectivity",
"mechanism"
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{
"name": "chemical system in review on the stereospecific fate and effects of chiral conazole",
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{
"name": "iron catalytic center (Fe)",
... | [
"bond_formation",
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"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Bielská L, Hale SE, Škulcová L (2021) in Science of The Total Environment: "The production and use of chiral pesticides are triggered by the need for more complex molecules capable of effectively combating a greater spectrum of pests and crop diseases, while sustaining high production yields. Currently... | Direct kinetics, isotopic labeling of review on the stereospecific fate and effects under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1016/j.scitotenv.2020.141600 | Bielská L, Hale SE, Škulcová L (2021), "A review on the stereospecific fate and effects of chiral conazole fungicides", Science of The Total Environment, doi:10.1016/j.scitotenv.2020.141600 | {
"source_id": "SRC-CHEM-00088",
"doi": "10.1016/j.scitotenv.2020.141600",
"pmid": "33182213",
"pmcid": null
} | Publisher Standard License | paraphrase_only | [
{
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"organic_mechanisms_and_synthesis_science",
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"Bielská L",
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] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
77 | UCHEM-000077 | Engineering Fe(II)/α-Ketoglutarate-Dependent Halogenases and Desaturases | What chemical principles, structures, or elementary mechanisms govern how individual members of the enzyme family direct this key intermediate toward the different reaction outcomes in Engineering Fe(II)/α-Ketoglutarate-Dependent Halogenases and Desaturases? | For Engineering Fe(II)/α-Ketoglutarate-Dependent Halogenases and Desaturases (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern how individual members of the enzyme family direc... | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Engineering Fe(II)/α-Ketoglutarate-Dependent Halogenases and Desaturases), what chemical principles, structures, or elemen... | Context from Biochemistry (2023): Fe(II)/α-ketoglutarate-dependent dioxygenases ( α- KGDs) are widespread enzymes in aerobic biology and serve a remarkable array of biological functions, including roles in collagen biosynthesis, plant and animal development, transcriptional regulation, nucleic acid modification, and se... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
"selectivity"
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{
"name": "chemical system in Engineering Fe(II)/α-Ketoglutarate-Dependent Halogenases and Desaturases",
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{
"name": "dioxygen (O2)",
"rol... | [
"metabolic_or_biochemical_transformation",
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"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Papadopoulou A, Meyer F, Buller RM (2023) in Biochemistry: "Fe(II)/α-ketoglutarate-dependent dioxygenases ( α- KGDs) are widespread enzymes in aerobic biology and serve a remarkable array of biological functions, including roles in collagen biosynthesis, plant and animal development, transcriptional re... | Direct kinetics, isotopic labeling of Engineering Fe(II)/α-Ketoglutarate-Dependent Halogenases and Desaturases under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
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] | review_article | explicit_gap | https://doi.org/10.1021/acs.biochem.2c00115 | Papadopoulou A, Meyer F, Buller RM (2023), "Engineering Fe(II)/α-Ketoglutarate-Dependent Halogenases and Desaturases", Biochemistry, doi:10.1021/acs.biochem.2c00115 | {
"source_id": "SRC-CHEM-00089",
"doi": "10.1021/acs.biochem.2c00115",
"pmid": "35446547",
"pmcid": null
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"Papadopoulou A",
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] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
78 | UCHEM-000078 | Relationship between receptor distribution and ligand architecture in Precision engineering of targeted nanocarriers | What is the relationship between receptor distribution and ligand architecture in Precision engineering of targeted nanocarriers? | In organic mechanisms and synthesis science transformations involving Precision engineering of targeted nanocarriers, how do competing transition states and steric/electronic effects control outcome selectivity: What is the relationship between receptor distribution and ligand architecture in Precision engineering of t... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Precision engineering of targeted nanocarriers), what is the relationship between receptor distribution and ligand architecture in Precision engineering of t... | Context from Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology (2018): Since their introduction in 1980, the number of advanced targeted nanocarrier systems has grown considerably. Nanocarriers capable of targeting single receptors, multiple receptors, or multiple epitopes have all been used to enhanc... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | selectivity | [
"selectivity",
"mechanism",
"stereocontrol"
] | [
{
"name": "chemical system in Precision engineering of targeted nanocarriers",
"role": "central_system",
"formula": null,
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"state_descriptor": "reactive_intermediate"
},
{
"name": "benzene / aromatic arene (C6H6)",
"role": "rea... | [
"bond_formation",
"bond_cleavage",
"rearrangement"
] | [
"organic mechanism and stereoselective bond construction"
] | [
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"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solution reaction medium",
"excitation_or_st... | [
"electronic",
"atomic",
"molecular"
] | As documented by Deci MB, Liu M, Dinh QT et al. (2018) in Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology: "Since their introduction in 1980, the number of advanced targeted nanocarrier systems has grown considerably. Nanocarriers capable of targeting single receptors, multiple receptors, or multipl... | Direct kinetics, isotopic labeling of Precision engineering of targeted nanocarriers under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1002/wnan.1511 | Deci MB, Liu M, Dinh QT et al. (2018), "Precision engineering of targeted nanocarriers", Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology, doi:10.1002/wnan.1511 | {
"source_id": "SRC-CHEM-00090",
"doi": "10.1002/wnan.1511",
"pmid": "29436157",
"pmcid": "PMC6089677"
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{
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"Deci MB",
"Liu M",
"Dinh QT",
"Nguyen J"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
79 | UCHEM-000079 | Enzymatic degradation of polyethylene (PE) by oxidative enzymes | What chemical principles, structures, or elementary steps govern enzymatic degradation of polyethylene (PE) by oxidative enzymes? | For role of oxidative defects in polyethylene binding and degradation (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern enzymatic degradation of polyethylene (PE) by oxidative enzym... | With respect to electron transfer, metabolic or biochemical transformation in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for role of oxidative defects in polyethylene binding and degradation), what chemical principles, structures, or element... | Context from Environmental Science and Pollution Research International (2026): The enzymatic degradation of polyethylene (PE) by oxidative enzymes remains poorly understood at the molecular level, limiting the development of effective biotechnological strategies for plastic valorization. Here, we investigate the molec... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 5,
"level": 5,
"name": "L5: Foundational or Grand"
} | open | established_open_question | 0.95 | electron_transfer | [
"electron_transfer",
"stability",
"mechanism",
"stereocontrol"
] | [
{
"name": "chemical system in role of oxidative defects in polyethylene binding and degradation",
"role": "central_system",
"formula": null,
"smiles": null,
"inchikey": null,
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"state_descriptor": "reactive_intermediate"
},
{
"name": "carbon dioxide (CO2)",
"rol... | [
"electron_transfer",
"metabolic_or_biochemical_transformation",
"bond_formation",
"bond_cleavage"
] | [
"organic mechanism and stereoselective bond construction"
] | [
"biological_milieu",
"solution",
"liquid"
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"biological",
"ambient"
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"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Callea L, Orlando C, Greco C et al. (2026) in Environmental Science and Pollution Research International: "The enzymatic degradation of polyethylene (PE) by oxidative enzymes remains poorly understood at the molecular level, limiting the development of effective biotechnological strategies for plastic ... | Direct kinetics, isotopic labeling of role of oxidative defects in polyethylene binding under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1007/s00775-026-02173-w | Callea L, Orlando C, Greco C et al. (2026), "Exploring the role of oxidative defects in polyethylene binding and degradation by a Rhodococcus opacus R7 multicopper oxidase: a computational perspective", Environmental Science and Pollution Research International, doi:10.1007/s00775-026-02173-w | {
"source_id": "SRC-CHEM-00091",
"doi": "10.1007/s00775-026-02173-w",
"pmid": "42762308",
"pmcid": null
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{
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"organic_mechanisms_and_synthesis_science",
"electron_transfer",
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] | 2,026 | [
"Callea L",
"Orlando C",
"Greco C",
"Fumagalli G"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
80 | UCHEM-000080 | Differences in the regioselectivity of deiodination by DIOs in Thyroid Hormone Deiodination-Mechanisms | What is the origin of the differences in the regioselectivity of deiodination by DIOs in Thyroid Hormone Deiodination-Mechanisms and Small Molecule Enzyme Mimics? | In organic mechanisms and synthesis science transformations involving Thyroid Hormone Deiodination-Mechanisms and Small Molecule Enzyme Mimics, how do competing transition states and steric/electronic effects control outcome selectivity: What is the origin of the differences in the regioselectivity of deiodination by D... | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Thyroid Hormone Deiodination-Mechanisms and Small Molecule Enzyme Mimics), what is the origin of the differences in the re... | Context from Biomolecules (2025): Thyroid hormones, biosynthesized in the follicular cells in the thyroid gland, play a crucial role in regulating various important biological processes. The thyroid hormone is synthesized as pro-hormone L-thyroxine (T4), while the active form is primarily produced through the phenolic ... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | selectivity | [
"selectivity",
"active_state",
"mechanism",
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{
"name": "chemical system in Thyroid Hormone Deiodination-Mechanisms and Small Molecule Enzyme Mimics",
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{
"name": "acetone / carbonyl subst... | [
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"biological_milieu",
"solution",
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] | {
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"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Giri D, Mugesh G (2025) in Biomolecules: "Thyroid hormones, biosynthesized in the follicular cells in the thyroid gland, play a crucial role in regulating various important biological processes. The thyroid hormone is synthesized as pro-hormone L-thyroxine (T4), while the active form is primarily produ... | Direct kinetics, isotopic labeling of Thyroid Hormone Deiodination-Mechanisms and Small Molecule Enzyme under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
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"kinetics",
"isotopic_labeling",
"quantum_chemistry"
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"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.3390/biom15040529 | Giri D, Mugesh G (2025), "Thyroid Hormone Deiodination-Mechanisms and Small Molecule Enzyme Mimics", Biomolecules, doi:10.3390/biom15040529 | {
"source_id": "SRC-CHEM-00092",
"doi": "10.3390/biom15040529",
"pmid": "40305277",
"pmcid": "PMC12025243"
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{
"id": 12,
"name": "open_access_chemical_review_corpus",
"display_name": "Open-Access Chemical Review & Perspect... | [
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"Giri D",
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81 | UCHEM-000081 | And their catalytic mechanisms and regulatory architectures in GDSL Lipases/Esterases | What chemical principles, structures, or elementary mechanisms govern and their catalytic mechanisms and regulatory architectures in GDSL Lipases/Esterases? | For GDSL Lipases/Esterases (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern and their catalytic mechanisms and regulatory architectures in GDSL Lipases/Esterases? | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (applied magnetic field (B0) with radiofrequency/microwave spin manipulation; probed via kinetics, isotopic labeling for GDSL Lipases/Esterases), what chemical principles, structures, or elementary mechanisms go... | Context from International Journal of Molecular Sciences (2026): GDSL esterase/lipase (GELP) proteins constitute an evolutionarily conserved yet functionally diversified hydrolase family in land plants. They participate in cuticle and secondary cell wall biosynthesis, seed lipid remobilization, reproductive development... | {
"id": 1,
"name": "organic_mechanisms_and_synthesis_science",
"display_name": "Organic Mechanisms and Synthesis Science",
"slug": "organic_mechanisms_and_synthesis_science"
} | [
"physical_organic_chemistry",
"reactive_intermediates",
"stereochemistry"
] | {
"id": 4,
"level": 4,
"name": "L4: Field-Level"
} | open | established_open_question | 0.95 | mechanism | [
"mechanism",
"stereocontrol",
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{
"name": "chemical system in GDSL Lipases/Esterases",
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"formula": null,
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"state_descriptor": "reactive_intermediate"
},
{
"name": "acetic acid / carboxylate (CH3COOH)",
"role": "reactant",
"formula... | [
"metabolic_or_biochemical_transformation",
"bond_formation",
"bond_cleavage",
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"biological_milieu",
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"pressure": "1 atm (1.013 bar) standard ambient pressure",
"ph_or_potential": "buffered physiological pH (7.0–7.4) and cellular redox potential",
"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
"molecular"
] | As documented by Dong K, Sarwar R, Liang Y et al. (2026) in International Journal of Molecular Sciences: "GDSL esterase/lipase (GELP) proteins constitute an evolutionarily conserved yet functionally diversified hydrolase family in land plants. They participate in cuticle and secondary cell wall biosynthesis, seed lipid... | Direct kinetics, isotopic labeling of GDSL Lipases/Esterases under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.3390/ijms27093872 | Dong K, Sarwar R, Liang Y et al. (2026), "GDSL Lipases/Esterases: Versatile Regulators of Plant Development and Stress Resilience", International Journal of Molecular Sciences, doi:10.3390/ijms27093872 | {
"source_id": "SRC-CHEM-00093",
"doi": "10.3390/ijms27093872",
"pmid": "42123463",
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"Dong K",
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"Zhang W"
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82 | UCHEM-000082 | Mechanism of promising future of metal-N-heterocyclic carb | What are the mechanisms of these anticancer complexes in promising future of metal-N-heterocyclic carbene complexes in medicinal chemistry? | For promising future of metal-N-heterocyclic carbene complexes in medicinal chemistry (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What are the mechanisms of these anticancer complexes in promising future of metal-N-heterocyclic carbene comp... | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for promising future of metal-N-heterocyclic carbene complexes in medicinal chemistry), what are the mechanisms of these anticancer complexes in promisi... | Context from Chemistry – A European Journal (2024): Metal complexes based on N-heterocyclic carbene (NHC) ligands have emerged as promising broad-spectrum antitumor agents in bioorganometallic medicinal chemistry. In recent decades, studies on cytotoxic metal-NHC complexes have yielded numerous compounds exhibiting sup... | {
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83 | UCHEM-000083 | Superior OER activity contributed by the external stimuli in Modulation of Electrochemical Reactions | What is the origin of superior OER activity contributed by the external stimuli in Modulation of Electrochemical Reactions through External Stimuli? | Regarding the reaction rates, activation barriers, and time-dependent dynamics of Modulation of Electrochemical Reactions through External Stimuli (organic mechanisms and synthesis science), what kinetic laws govern: What is the origin of superior OER activity contributed by the external stimuli in Modulation of Electr... | With respect to electron transfer, bond formation in aqueous solution or buffered electrolyte (H2O) (applied electrochemical voltage bias / interfacial electric field; probed via kinetics, isotopic labeling for Modulation of Electrochemical Reactions through External Stimuli), what is the origin of superior OER activit... | Context from ACS Nano (2025): Electrochemical water splitting is a promising method for generating green hydrogen gas, offering a sustainable approach to addressing global energy challenges. However, the sluggish kinetics of the anodic oxygen evolution reaction (OER) poses a great obstacle to its practical application.... | {
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84 | UCHEM-000084 | Control mechanisms that allow for this high level of productivity in role | What chemical principles, structures, or elementary steps govern control mechanisms that allow for this high level of productivity in role of oxylipins in Cannabis to enhance cannabinoid production? | For role of oxylipins in Cannabis to enhance cannabinoid production (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary steps govern control mechanisms that allow for this high level of productivi... | With respect to bond formation, bond cleavage in surface reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for role of oxylipins in Cannabis to enhance cannabinoid production), what chemical principles, structures, or elementary steps govern control mechanisms that all... | Context from Frontiers in Plant Science (2025): Phytocannabinoids are medically important specialized defense compounds that are sparsely distributed among plants, yet Cannabis sativa can synthesize unprecedented amounts of these compounds within highly specialized surface cell factories known as glandular trichomes. T... | {
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85 | UCHEM-000085 | Molecular and structural omics determinants underlying this recurrent fragility in model of repeat-driven | What chemical principles, structures, or elementary mechanisms govern molecular and structural omics determinants underlying this recurrent fragility in model of repeat-driven chromosomal fragility in Triticeae? | For model of repeat-driven chromosomal fragility in Triticeae (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern molecular and structural omics determinants underlying this recu... | With respect to rearrangement, bond formation in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for model of repeat-driven chromosomal fragility in Triticeae), what chemical principles, structures, or elementary mechanisms govern molecular and structural om... | Context from BMC Genomics (2026): Background Repetitive DNA dominates cereals genomes and plays a major yet poorly understood role in shaping structural genome variation. Recent advances in long-read sequencing, pangenomics, and 3D chromatin mapping have revealed that chromosomal rearrangements in Triticeae frequently ... | {
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86 | UCHEM-000086 | Hydrophilic molecular scaffolds required for more stable amphiphilic systems | What is the origin of the hydrophilic molecular scaffolds required for more stable amphiphilic systems? | For Low-Molecular-Weight Polyols as Key Factors in Sulfur- and Borate-Mediated (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What is the origin of the hydrophilic molecular scaffolds required for more stable amphiphilic systems? | With respect to bond formation, bond cleavage in biological milieu reaction medium (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Low-Molecular-Weight Polyols as Key Factors in Sulfur- and Borate-Mediated), what is the origin of the hydrophilic molecular scaffolds required f... | Context from Membranes (2026): The emergence of biological membranes was a critical step in the origin of cellular life because compartmentalization enabled molecular concentration, selective interactions, and increasingly complex chemical evolution. While fatty acids are widely considered the primary constituents of p... | {
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] | As documented by Dembitsky VM (2026) in Membranes: "The emergence of biological membranes was a critical step in the origin of cellular life because compartmentalization enabled molecular concentration, selective interactions, and increasingly complex chemical evolution. While fatty acids are widely considered the prim... | Direct kinetics, isotopic labeling of Low-Molecular-Weight Polyols as Key Factors in Sulfur under biological conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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87 | UCHEM-000087 | Molecular strategies enabling bacteria to colonise and damage woody tissues | What chemical principles, structures, or elementary mechanisms govern the molecular strategies enabling bacteria to colonise and damage woody tissues? | For Molecular Determinants of Adaptation and Infection in Bacterial Pathogens (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the molecular strategies enabling bacteria to co... | With respect to bond formation, bond cleavage in solution reaction medium (applied magnetic field (B0) with radiofrequency/microwave spin manipulation; probed via kinetics, isotopic labeling for Molecular Determinants of Adaptation and Infection in Bacterial Pathogens), what chemical principles, structures, or elementa... | Context from European Journal of Organic Chemistry (2026): Bacterial pathogens of woody plants represent a pervasive yet underexplored threat to global agriculture and forestry, causing devastating diseases in fruit trees, shrubs, forest trees and ornamental species. Unlike pathogens of herbaceous plants, the molecular... | {
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"electronic",
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] | As documented by Arroyo-Mateo A, Murillo J, Rodríguez-Moreno L et al. (2026) in European Journal of Organic Chemistry: "Bacterial pathogens of woody plants represent a pervasive yet underexplored threat to global agriculture and forestry, causing devastating diseases in fruit trees, shrubs, forest trees and ornamental ... | Direct kinetics, isotopic labeling of Molecular Determinants of Adaptation and Infection under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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88 | UCHEM-000088 | EFP molecular structures influence liposome assembly, stability, gastrointestinal fate, and delivery efficiency | What are the mechanisms by which EFP molecular structures influence liposome assembly, stability, gastrointestinal fate, and delivery efficiency? | At the phase boundary or electrical double layer of Edible Fungal Polysaccharide-Liposome (organic mechanisms and synthesis science), how do local solvation and interfacial fields govern: What are the mechanisms by which EFP molecular structures influence liposome assembly, stability, gastrointestinal fate, and deliver... | With respect to network emergence, bond formation in interface reaction medium (thermal activation under interfacial conditions; probed via kinetics, isotopic labeling for Edible Fungal Polysaccharide-Liposome), what are the mechanisms by which EFP molecular structures influence liposome assembly, stability, gastrointe... | Context from International Journal of Molecular Sciences (2026): Liposomes are among the most extensively studied delivery systems owing to their biocompatibility, structural versatility, and ability to improve the stability and bioavailability of bioactive compounds. Meanwhile, edible fungal polysaccharides (EFPs), pa... | {
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89 | UCHEM-000089 | Underlying molecular mechanisms and evolutional processes of flower colors | What chemical principles, structures, or elementary mechanisms govern underlying molecular mechanisms and evolutional processes of flower colors? | For formation and evolution of flower coloration in Brassica crops (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern underlying molecular mechanisms and evolutional processes o... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for formation and evolution of flower coloration in Brassica crops), what chemical principles, structures, or elementary mechanisms govern underlying molecular m... | Context from Frontiers in Genetics (2024): The flower coloration of Brassica crops possesses significant application and economic value, making it a research hotspot in the field of genetics and breeding. In recent years, great progress has been made in the research on color variation and creation of Brassica crops. Ho... | {
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90 | UCHEM-000090 | Functions and binding partners in Functionalised Cofactor Mimics for Interactome Discovery and Beyond | What chemical principles, structures, or elementary mechanisms govern the functions and binding partners in Functionalised Cofactor Mimics for Interactome Discovery and Beyond? | For Functionalised Cofactor Mimics for Interactome Discovery and Beyond (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the functions and binding partners in Functionalised C... | With respect to metabolic or biochemical transformation, bond formation in aqueous solution or buffered electrolyte (H2O) (thermal activation under biological conditions; probed via kinetics, isotopic labeling for Functionalised Cofactor Mimics for Interactome Discovery and Beyond), what chemical principles, structures... | Context from Angewandte Chemie International Edition (2022): Cofactors are required for almost half of all enzyme reactions, but their functions and binding partners are not fully understood even after decades of research. Functionalised cofactor mimics that bind in place of the unmodified cofactor can provide answers,... | {
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91 | UCHEM-000091 | Regioselectivity in the amine addition toward the formation of anti-Markovnikov products addition | What molecular principles and elementary mechanisms govern the regioselectivity in the amine addition toward the formation of anti-Markovnikov products (addition to the less substituted carbon)? | In organic mechanisms and synthesis science transformations involving Anti-Markovnikov Intermolecular Hydroamination of Alkenes and Alkynes, how do competing transition states and steric/electronic effects control outcome selectivity: What molecular principles and elementary mechanisms govern the regioselectivity in th... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Anti-Markovnikov Intermolecular Hydroamination of Alkenes and Alkynes), what molecular principles and elementary mechanisms govern the regioselectivity in th... | Context from Chemical Reviews (2023): Hydroamination, the addition of an N-H bond across a C-C multiple bond, is a reaction with a great synthetic potential. Important advances have been made in the last decades concerning catalysis of these reactions. However, controlling the regioselectivity in the amine addition tow... | {
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"electronic",
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92 | UCHEM-000092 | Synthesis of an anisotropic hollow structure with large number of uncoordinated atoms | What chemical principles, structures, or elementary mechanisms govern synthesis of an anisotropic hollow structure with large number of uncoordinated atoms and tailored hole size? | For Core-shell Au@AuAg nano-peanuts for the catalytic reduction of 4-nitrophenol (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern synthesis of an anisotropic hollow structure ... | With respect to bond formation, bond cleavage in surface reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Core-shell Au@AuAg nano-peanuts for the catalytic reduction of 4-nitrophenol), what chemical principles, structures, or elementary mechanisms govern synthesis... | Context from Nanoscale Advances (2020): Bimetallic hollow core-shell nanoparticles have gained immense attention, especially as a high-performance catalyst due to their large surface area and increased number of uncoordinated atoms. However, the synthesis of an anisotropic hollow structure with large number of uncoordi... | {
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"excitation_or_sti... | [
"electronic",
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] | As documented by Thambi V, Gautam ARS, Khatua S (2020) in Nanoscale Advances: "Bimetallic hollow core-shell nanoparticles have gained immense attention, especially as a high-performance catalyst due to their large surface area and increased number of uncoordinated atoms. However, the synthesis of an anisotropic hollow ... | Direct kinetics, isotopic labeling of Core-shell Au@AuAg nano-peanuts for the catalytic reduction under ambient conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
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93 | UCHEM-000093 | Mechanisms of other selenoproteins and, for some of them, even the function lies | What chemical mechanisms and structural factors govern the mechanisms of other selenoproteins and, for some of them, even the function lies in the dark? | For 50 Years of Organoselenium Chemistry, Biochemistry and Reactivity (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical mechanisms and structural factors govern the mechanisms of other selenoproteins and, for some of them, even the ... | With respect to metabolic or biochemical transformation, bond formation in biological milieu reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for 50 Years of Organoselenium Chemistry, Biochemistry and Reactivity), what chemical mechanisms and structural factors govern... | Context from Chemistry – A European Journal (2024): In 1973, two major discoveries changed the face of selenium chemistry: the identification of the first mammal selenoenzyme, glutathione peroxidase 1, and the discovery of the synthetic utility of the so-called selenoxide elimination. While the chemical mechanism behin... | {
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... | [
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"solvent_or_medium": "biological milieu reaction medium",
"excitation... | [
"electronic",
"atomic",
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94 | UCHEM-000094 | ROS in Cyclic homodimer formation by singlet oxygen-mediated oxidation of carnosine | What chemical principles, structures, or elementary mechanisms govern an ROS in Cyclic homodimer formation by singlet oxygen-mediated oxidation of carnosine? | For Cyclic homodimer formation by singlet oxygen-mediated oxidation of carnosine (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern an ROS in Cyclic homodimer formation by singl... | With respect to bond formation, bond cleavage in aqueous solution or buffered electrolyte (H2O) (applied magnetic field (B0) with radiofrequency/microwave spin manipulation; probed via kinetics, isotopic labeling for Cyclic homodimer formation by singlet oxygen-mediated oxidation of carnosine), what chemical principles... | Context from Frontiers in Chemistry (2024): Although carnosine (β-Ala-L-His) is one of physiological protectants against in vivo damages caused by reactive oxygen species (ROS), its reactivity against singlet oxygen ( 1 O 2 ), an ROS, is still unclear at the molecular level. Theoretically, the reaction consists of two ... | {
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95 | UCHEM-000095 | Exact release mechanism of large macromolecules from ROS-sensitive liposomes | What chemical principles, structures, or elementary mechanisms govern exact release mechanism of large macromolecules from ROS-sensitive liposomes? | For role of lipid oxidation pathway in reactive oxygen species-mediated (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern exact release mechanism of large macromolecules from R... | With respect to bond formation, bond cleavage in solution reaction medium (UV-visible or near-IR electromagnetic photoexcitation (hν); probed via kinetics, isotopic labeling for role of lipid oxidation pathway in reactive oxygen species-mediated), what chemical principles, structures, or elementary mechanisms govern ex... | Context from Materials Advances (2024): Reactive oxygen species (ROS)-mediated photooxidation is an efficient method for triggering a drug release from liposomes. In addition to the release of small molecules, it also allows the release of large macromolecules, making it a versatile tool for controlled drug delivery. H... | {
"id": 1,
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96 | UCHEM-000096 | CBF degradation by sulfate radicals (SO 4 · - ) and hydroxyl radicals | What is the mechanism of CBF degradation by sulfate radicals (SO 4 · - ) and hydroxyl radicals (·OH)? | In organic mechanisms and synthesis science transformations involving Mechanism and toxicity assessment of carbofuran degradation by persulfate-based, how do competing transition states and steric/electronic effects control outcome selectivity: What is the mechanism of CBF degradation by sulfate radicals (SO 4 · - ) an... | With respect to bond formation, bond cleavage in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Mechanism and toxicity assessment of carbofuran degradation by persulfate-based), what is the mechanism of CBF degradation by sulfate radicals (SO 4 · - ) an... | Context from RSC Advances (2024): The advanced oxidation process based on persulfate has been proven to be a promising method for degrading the highly toxic carbamate pesticide carbofuran (CBF). However, the mechanism of CBF degradation by sulfate radicals (SO 4 · - ) and hydroxyl radicals (·OH) is still unclear and re... | {
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97 | UCHEM-000097 | Molecular mechanisms that regulate parasitic nematode infections | What chemical principles, structures, or elementary mechanisms govern molecular mechanisms that regulate parasitic nematode infections? | For Root-knot nematode modulates plant CLE3-CLV1 signaling as a long-distance (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern molecular mechanisms that regulate parasitic nem... | With respect to polymerization, bond formation in solution reaction medium (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Root-knot nematode modulates plant CLE3-CLV1 signaling as a long-distance), what chemical principles, structures, or elementary mechanisms govern molecular ... | Context from Science Advances (2023): Plants use many long-distance and systemic signals to modulate growth and development, as well as respond to biotic and abiotic stresses. Parasitic nematodes infect host plant roots and cause severe damage to crop plants. However, the molecular mechanisms that regulate parasitic ne... | {
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{
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"electronic",
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98 | UCHEM-000098 | Tungsten leaching problem (Spongy titanosilicate promotes the catalytic performance and reusability) | What chemical principles, structures, or elementary mechanisms govern the tungsten leaching problem? | For Spongy titanosilicate promotes the catalytic performance and reusability (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical principles, structures, or elementary mechanisms govern the tungsten leaching problem? | With respect to catalyst restructuring, bond formation in solid-state lattice or crystalline solid interface (thermal activation under ambient conditions; probed via kinetics, isotopic labeling for Spongy titanosilicate promotes the catalytic performance and reusability), what chemical principles, structures, or elemen... | Context from RSC Advances (2022): A tungsten containing catalyst catalyzed oxidative cleavage of methyl oleate (MO) by employing H 2 O 2 as an oxidant and is known as an efficient approach for preparing high value-added chemicals, however, the tungsten leaching problem remains unresolved. In this work, a binary catalys... | {
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99 | UCHEM-000099 | Complex reaction mechanism (Copper-Based Catalysts for Electrochemical Reduction of Carbon Dioxide) | What chemical principles, structures, or elementary steps govern complex reaction mechanism? | In organic mechanisms and synthesis science transformations involving Copper-Based Catalysts for Electrochemical Reduction of Carbon Dioxide, how do competing transition states and steric/electronic effects control outcome selectivity: What chemical principles, structures, or elementary steps govern complex reaction me... | With respect to electron transfer, adsorption in solution reaction medium (applied electrochemical voltage bias / interfacial electric field; probed via kinetics, isotopic labeling for Copper-Based Catalysts for Electrochemical Reduction of Carbon Dioxide), what chemical principles, structures, or elementary steps gove... | Context from ChemPlusChem (2023): Electrochemical reduction of CO 2 into high energy density multi-carbon chemicals or fuels (e. g., ethylene) via new renewable energy storage has extraordinary implications for carbon neutrality. Copper (Cu)-based catalysts have been recognized as the most promising catalysts for the e... | {
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100 | UCHEM-000100 | Primary products and their branching fractions (BFs) in Crossed-beam and theoretical studies | What chemical mechanisms and structural factors govern the primary products and their branching fractions (BFs) in Crossed-beam and theoretical studies of multichannel nonadiabatic reactions? | For Crossed-beam and theoretical studies of multichannel nonadiabatic reactions (organic mechanisms and synthesis science), what elementary reaction steps and molecular interactions resolve the question: What chemical mechanisms and structural factors govern the primary products and their branching fractions (BFs) in C... | With respect to spin conversion, bond formation in solvent-free gas-phase or atmospheric aerosol medium (thermal activation under ultrafast conditions; probed via kinetics, isotopic labeling for Crossed-beam and theoretical studies of multichannel nonadiabatic reactions), what chemical mechanisms and structural factors... | Context from Faraday Discussions (2022): Atomic oxygen reactions can contribute significantly to the oxidation of unsaturated aliphatic and aromatic hydrocarbons. The reaction mechanism is started by electrophilic O atom addition to the unsaturated bond(s) to form "chemically activated" triplet oxy-intermediate(s), whi... | {
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"ultrafast",
"ambient"
] | {
"temperature": "298 K lattice baseline with ultrafast non-equilibrium electronic/vibrational excitation",
"pressure": "low-pressure / vacuum gas-phase regime (< 10^-3 mbar)",
"ph_or_potential": "open-circuit thermal chemical potential (neutral / unbiased regime)",
"solvent_or_medium": "solvent-free gas-phase ... | [
"electronic",
"atomic",
"molecular"
] | As documented by Cavallotti C, Della Libera A, Zhou CW et al. (2022) in Faraday Discussions: "Atomic oxygen reactions can contribute significantly to the oxidation of unsaturated aliphatic and aromatic hydrocarbons. The reaction mechanism is started by electrophilic O atom addition to the unsaturated bond(s) to form "c... | Direct kinetics, isotopic labeling of Crossed-beam and theoretical studies of multichannel nonadiabatic reactions under ultrafast conditions combined with quantitative mechanism discrimination and ab initio electronic-structure/free-energy benchmarks. | [
"mechanism_discrimination",
"direct_observation"
] | [
"kinetics",
"isotopic_labeling",
"quantum_chemistry"
] | [
"competing_mechanisms_fit_current_data",
"entity_inferred_not_directly_observed"
] | review_article | explicit_gap | https://doi.org/10.1039/d2fd00037g | Cavallotti C, Della Libera A, Zhou CW et al. (2022), "Crossed-beam and theoretical studies of multichannel nonadiabatic reactions: branching fractions and role of intersystem crossing for O( 3 P) + 1,3-butadiene", Faraday Discussions, doi:10.1039/d2fd00037g | {
"source_id": "SRC-CHEM-00112",
"doi": "10.1039/d2fd00037g",
"pmid": "35815602",
"pmcid": null
} | cc by | verbatim_allowed | [
{
"id": 2,
"name": "trends_in_chemistry_big_questions",
"display_name": "Trends in Chemistry — Big Questions in Chemistry",
"slug": "trends-in-chemistry-big-questions"
},
{
"id": 12,
"name": "open_access_chemical_review_corpus",
"display_name": "Open-Access Chemical Review & Perspect... | [
"organic_mechanisms_and_synthesis_science",
"spin_dynamics",
"physical_organic_chemistry",
"reactive_intermediates"
] | 2,022 | [
"Cavallotti C",
"Della Libera A",
"Zhou CW",
"Recio P"
] | paraphrased_verified | 2026-10-14T19:45:00 | OPEN-VERIFIED | null | null | true | true | 2026-10-14T19:45:00 | 2026-10-14T19:45:00 |
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