Beyond Aresta’s Complex: Ni- and Pd-Catalyzed Organozinc Coupling with CO<sub>2</sub>
Why this work is in the frame
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Bibliographic record
Abstract
Organozinc reagents are widely used in organic synthesis due primarily to their high functional group compatibility. However, under mild conditions, these organometallic reagents do not react directly with CO2, the ideal C1 source for organic synthesis. Herein, we report that both Ni and Pd complexes can catalyze the addition of organozinc reagents to CO2 under mild conditions (1 atm CO2, 0 degrees C). This transformation represents an important extension of the Negishi cross-coupling and is believed to occur via a novel mechanism involving Aresta's complex and/or its corresponding Pd analogue.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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