<i>m</i>-Terphenyl-Substituted Amidinates: Useful Ligands in the Preparation of Robust Aluminum Alkyls
Bibliographic record
Abstract
The syntheses of m -terphenyl-substituted amidines and their corresponding dialkylaluminum amidinate complexes are reported. The amidines are prepared in a one-pot reaction using 2,4,6-triphenylphenyllithium (formed in situ by the reaction of 2,4,6-triphenylphenylbromide with n -butyllithium) with dialkylcarbodiimides (RN C NR, R = cyclohexyl or isopropyl). An aqueous workup of the reaction mixtures results in the formation of sterically demanding amidines 2H and 3H . The amidines react readily with trimethylaluminum to form dialkylaluminum amidinate complexes. Two complexes have been prepared and comprehensively characterized in the solid state using single-crystal X-ray crystallography. In the crystalline state, dialkylaluminum amidinates are robust complexes that can be easily handled in air for short periods of time without noticeable decomposition.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".