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Record W4396808149 · doi:10.1002/jhet.4829

Synthesis of cyclopentane annulated <scp>δ‐lactams</scp> via <scp>diazomethane‐mediated CC</scp> bond cleavage of <scp>α‐keto</scp><i>N,O</i><scp>‐hemiaminals</scp>

2024· article· en· W4396808149 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueJournal of Heterocyclic Chemistry · 2024
Typearticle
Languageen
FieldChemistry
TopicCyclopropane Reaction Mechanisms
Canadian institutionsApotex (Canada)
FundersDepartment of Science and Technology, Ministry of Science and Technology, India
KeywordsChemistryCleavage (geology)StereochemistryCyclopentane

Abstract

fetched live from OpenAlex

Abstract Diazomethane‐mediated C‐C bond cleavage of α‐keto N,O ‐hemiaminals was investigated for the first time. Diazomethane as a reagent result C‐C bond cleavage of norbornyl α‐keto N,O ‐hemiaminals, Grob‐like fragmentation, lead to the formation of cyclopentane annulated δ‐lactams in excellent yields. We have synthesized the precursor norbornyl α‐keto N,O ‐hemiaminal by the nucleophilic displacement of halogen of norbornyl α‐diketone with the various amines.

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.

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)0.002
metaresearch head score (Gemma)0.010
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMetaresearch, Meta-epidemiology (narrow), Research integrity
Consensus categoriesMeta-epidemiology (narrow), Research integrity
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 score0.033
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.010
Meta-epidemiology (narrow)0.0020.002
Meta-epidemiology (broad)0.0040.002
Bibliometrics0.0010.002
Science and technology studies0.0000.001
Scholarly communication0.0000.001
Open science0.0030.001
Research integrity0.0020.004
Insufficient payload (model declined to judge)0.0000.000

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 head0.009
GPT teacher head0.235
Teacher spread0.226 · 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