Hydrotreating Chemistry of Model Products from Bioprocessing of Carbazoles
Bibliographic record
Abstract
Carbazoles are among the most difficult heterocyles to remove by conventional hydrotreating, due to their low basicity and the stability of the carbon−nitrogen bonds. An alternative approach to hydrotreating may be biological catalysts which have the ability to open the central ring of carbazole to give a free amine. The resulting compound would then be more amenable to catalytic hydrotreating. The purpose of this study was to assess the behavior of functional groups that are typical of biological oxidation under hydrotreating conditions. This information can be used to define the best possible pathways for screening of potential biocatalysts. A series of monofunctional and bifunctional aromatic compounds were reacted, included amines, phenols, alcohols, and carboxylic acids. All of the amines were more reactive than carbazole, but some bifunctional compounds, such as amino-alcohols and phenol-alcohols, tended to give polymerization or ring-closure reactions. The most desirable pathways for biological treatment of carbazole, therefore, are either complete deamination or ring opening without leaving active leaving groups proximate to a free amine.
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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 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 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 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".