Cover Picture: Modular Synthesis of Triarylmethanes through Palladium‐Catalyzed Sequential Arylation of Methyl Phenyl Sulfone (Angew. Chem. Int. Ed. 3/2014)
Why this work is in the frame
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Bibliographic record
Abstract
Triarylmethanes were prepared in three steps from phenyl methyl sulfone, as described by M. Nambo and C. M. Crudden in their Communication on page 742 ff. After two selective CH arylation reactions, the third aromatic ring was introduced through a novel arylative desulfonation. This sequence permits the synthesis of a wide variety of unsymmetric triarylmethanes from a simple, readily available starting material. Triarylmethanes were prepared in three steps from phenyl methyl sulfone, as described by M. Nambo and C. M. Crudden in their Communication on page 742 ff. After two selective CH arylation reactions, the third aromatic ring was introduced through a novel arylative desulfonation. This sequence permits the synthesis of a wide variety of unsymmetric triarylmethanes from a simple, readily available starting material. X⋅⋅⋅H Hydrogen Bonds Unconventional CH⋅⋅⋅X hydrogen bonds are strong enough to drive supramolecular polymerization and gelation processes, as described by G. Fernández et al. in their Communication on page 700 ff. The molecular arrangement is maintained in the crystalline state.1 Shape-Dependent Lysis In their Communication on page 842 ff., J. M. Cooper et al. describe the selective lysis of red blood cells by an electric field. The selectivity results from the shape of the blood cells.1 Ketone Alkylation T. J. Donohoe et al. describe in their Communication on page 761 ff. the use of methanol as an alkylating reagent in a rhodium-catalyzed reaction to generate branched alkyl products from aromatic and aliphatic ketones under mild conditions.1
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.026 | 0.001 |
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