A Reactivity Study of Well-Defined Alkenylalanes Toward Anions, Lewis-Bases and Benzophenone
Bibliographic record
Abstract
The reactivity of well-defined silyl-substituted alkenylalanes has been studied in the presence of anions, Lewis bases and benzophenone. In the presence of methyllithium or fluoride anions, the corresponding methyl- or fluoro-aluminates bearing alkenyl substituents of Z configuration have been fully characterized including by X-ray diffraction analysis. The configurational stability of these ate complexes toward Z -to- E isomerization revealed substituent-dependent and was examined on the basis of experiments and DFT calculations. In a second step, the fate of benzonitrile and ketone adducts of the alkenylalanes was investigated. Whereas the benzonitrile adducts revealed thermally stable, the corresponding Ph 2 C═O → Al(alkenyl) 3 adducts evolved to the alkoxyaluminums due to the transfer of a α-hydride from an alkenyl substituent to the activated carbonyl function. The mechanism of this uncommon reduction could be unveiled and compared to more classical alkyl- and alkenyl-groups migration processes.
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How this classification was reachedexpand
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 | 0.000 |
| 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 | 0.000 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".