Conversion of Iodocyclopropanes into Cyclopropylzinc Chlorides and Pd(0)-Catalyzed Cross-Coupling of the Latter Derivatives with Alkenyl Iodides and Iodobenzene: Stereospecific Synthesis of 1,2-Bisalkenylcyclopropanes and 1-Alkenyl-2-phenylcyclopropanes
Why this work is in the frame
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Bibliographic record
Abstract
A method for the preparation of functionalized cyclopropylzinc chlorides, which involves treatment of substituted 2-alkenyl-1-iodocyclopropanes with BuLi followed by transmetalation of the resultant cyclopropyllithium with zinc chloride, is described. Palladium(0)-catalyzed cross-coupling of the cyclopropylzinc chloride derivatives with alkenyl iodides or iodobenzene provides highly substituted 1,2-bisalkenylcyclopropanes or 1-alkenyl-2-phenylcyclopropanes. In two of the cases studied, the initially formed cis-1,2-bisalkenylcyclopropanes 27, 29 underwent partial Cope rearrangement under the cross-coupling conditions to afford the corresponding 1,4-cycloheptadienes 28 and 30, respectively.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| 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