Processing of <i>o</i>-Halobenzoates by Toluene Dioxygenase. The Role of the Alkoxy Functionality in the Regioselectivity of the Enzymatic Dihydroxylation Reaction
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
In order to investigate the relationship between the size of a substituent on the aromatic substrate and its directing effect on the dihydroxylation, a series of 2-halobenzoates was synthesized and subjected to metabolism by toluene dioxygenase in preparative-scale fermentation cultures of Escherichia coli JM109 (pDTG601A). Larger ester substituents were shown to have a greater directing effect on the dihydroxylation reaction. Furthermore, significant increases in regioselectivity were observed using propargyl substituents, relative to the use of any other ester substituent. The selectivity and the product ratios are reported for o -fluoro-, o -chloro-, o -bromo-, and o -iodobenzoate esters (methyl, ethyl, n -propyl, allyl, and propargyl). Experimental and spectral data, as well as absolute stereochemistry, are provided for all new compounds.
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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 | 0.004 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| 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) | 0.000 | 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