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Record W2024246539 · doi:10.1560/qrh5-q3n0-0xa6-pt9y

On the relative rate of hydrolysis of a series of ketals and their proton affinities

2000· article· en· W2024246539 on OpenAlexaff
Shigui Li, Yves L. Dory, Pierre Deslongchamps

Bibliographic record

VenueIsrael Journal of Chemistry · 2000
Typearticle
Languageen
FieldChemistry
TopicChemical Reaction Mechanisms
Canadian institutionsUniversité de Sherbrooke
Fundersnot available
KeywordsChemistryProtonationAffinitiesProton affinityHydrolysisProtonReactivity (psychology)Computational chemistryBond cleavageCleavage (geology)StereochemistryOrganic chemistry

Abstract

fetched live from OpenAlex

Abstract The relative rates of hydrolysis of a series of cyclic and acyclic ketals was studied. Their reactivity toward acid hydrolysis is explained by considering the ease of protonation and the cleavage of the C—O bond. The experimental work and the theoretical calculations of the proton affinities of the ketals suggest that the rate‐limiting step of hydrolysis of ketals is a concerted protonation and cleavage of the C—O bond. The relative proton affinity is considered to be a direct consequence of the ease of proper lone pair orbital alignment on the oxygen atoms of the various ketals.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.017
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.011
GPT teacher head0.211
Teacher spread0.200 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations4
Published2000
Admission routes1
Has abstractyes

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