On the purity of 2‐[<i>ortho</i>‐anilinyl]‐1,3‐benzoxazole derived from 2<i>H</i>‐3,1‐benzoxazine‐2,4(1<i>H</i>)dione (<i>isatoic anhydride</i>) [1,2]
Why this work is in the frame
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Bibliographic record
Abstract
Abstract magnified image The Lewis acid catalyzed synthesis and chromatographic purification of isatoic anhydride‐derived 2‐(2′‐anilinyl)‐1,3‐benzoxazole ( 2 ) can result in the co‐isolation of 2 and a light pink colored impurity (<5%). This latter species has been identified (NMR, single crystal X‐ray diffraction, mp) as 2′‐hydroxy‐2‐aminobenzanilide ( 3 ), which represents a predictable intermediate in the formation of 2 . Compound 3 crystallizes in an orthorhombic crystal system of space group P 2 1 2 1 2 1 with four molecules in the unit cell (α = β = γ = 90°; a = 6.715 (2) Å, b = 12.100 (4) Å, c = 13.321 (4) Å; V = 1082.2 (6) Å 3 ). Pure 2 is characterized as a colorless, high‐melting solid; unlike the dark colored oil that is isolated if 2 contains traces of 3 . J. Heterocyclic Chem., (2010).
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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 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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