N-(5-(Dichloromethylene)-2-oxoimidazolidin-4-ylidene)sulfonamides: Small molecules with big synthetic capabilities
Bibliographic record
Abstract
A number of 5-dichloromethylidene-4-sulfonyliminohydantoins were synthesized by the reaction of 2-amino-3,3-dichloroacrylonitrile (ADAN) with aryl and alkyl isothiocyanates. These products are polyfunctional molecules that are considered as initial materials for the synthesis of bioactive compounds. The method of such derivatives multigram synthesis was optimized; also, the features of purification were described, and the main products of reaction mixture alcoholysis (acyclic carbamates) were identified for the first time. A number of modifications was carried out on the example of 5-dichloromethylidene-4-tosyliminohydantoin, namely: alkylation, hydrolysis of the amino group with subsequent arylation, substitution reaction with S-nucleophile, Suzuki – Miyaura coupling, and reduction of the dichloromethylidene fragment to the methyl group. The anticancer activity of 5-dichloromethylidene-4-tosyliminohydantoin was shown.
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 imitationNot 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.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".