Spiro-Aziridine and Bislactam Formation from Bisketene−Imine Cycloadditions
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.
Bibliographic record
Abstract
1,2-Bisketenes 6 react with imines PhCH NAr, ( E )- 2, forming spiro-aziridines 7 . DFT computations indicate that this occurs by nucleophilic attack of the imine on the carbonyl carbon of the more reactive arylketene moiety, followed by cyclization, and not by prior cyclization of the 1,2-bisketene forming a carbene lactone intermediate. Computations also indicate that the previously studied bisketene 10 from benzocyclobutadiene 9 is 4.0 kcal/mol less stable than carbene lactone 12 that would result from cyclization but that the failure to observe 12 results from a lower barrier for 10 to instead revert to 9 . 1,2-, 1,3-, and 1,4-Bisketenylbenzenes 16, 19, and 22 react with imines forming bis(β-lactams), with a preference for formation of mixtures of trans, trans chiral (±) and achiral diastereomeric products.
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 imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it