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Record W4243778046 · doi:10.3762/bxiv.2019.26.v1

<i>Reaction of Arylmethyl Isocyanides/Arylmethyl-amines with Xanthate Esters: A Facile and Unexpected Synthesis of Carbamothioates</i>

2019· preprint· en· W4243778046 on OpenAlexafffund
Narasimhamurthy Rajeev, Toreshettahally R. Swaroop, Seegehalli M. Anil, Kupalli R Kiran, Chandru Chandru, Paris E. Georghiou, Ahmad I. Alrawashdeh, Shofiur Rahman, Abdullah N. Alodhayb, Kanchugarakoppal S. Rangappa, Maralinganadoddi P. Sadashiva

Bibliographic record

Venuenot available
Typepreprint
Languageen
FieldChemistry
TopicSynthesis of heterocyclic compounds
Canadian institutionsMemorial University of Newfoundland
FundersDeanship of Scientific Research, King Saud UniversityUniversity of MysoreKing Saud UniversityCompute Canada
KeywordsXanthateChemistrySodium hydrideCondensationHydrideSodiumCondensation reactionMedicinal chemistryOrganic chemistryInorganic chemistryCatalysisMetal

Abstract

fetched live from OpenAlex

An unexpected formation of carbamothioates by the reaction of arylmethyl isocyanides with xanthate esters in the presence of sodium hydride is reported. The products thus obtained were compared with carbamothioates obtained by the condensation of the corresponding benzylamines with xanthate esters in the presence of sodium hydride in DMF. A mechanism which is substantiated by DFT calculations to account for the unexpected reactions is proposed.

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 machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
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 score0.002
Threshold uncertainty score0.006

Distilled classifier scores by category (both heads)

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)0.0020.001

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 head0.013
GPT teacher head0.225
Teacher spread0.212 · 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 source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
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

Citations1
Published2019
Admission routes2
Has abstractyes

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