Intramolecular thiolysis of 4-mercaptobutyrate esters: developing a “traceless” linker for alcohol release from self-assembled monolayers on gold
Why this work is in the frame
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Bibliographic record
Abstract
A series of esters of dithiobutyric acid was prepared using the carbodiimide coupling system. These esters were used to examine the kinetic feasibility of release of alcohols by reductive cleavage of the disulfide. Release of p-nitrophenol was rapid following reduction with dithiothreitol at pH ~10.5. Intramolecular thiolysis is at least one hundred-fold faster then base hydrolysis at this pH. NMR experiments established rapid alcohol release for phenolates and ethanolamine derivatives but alkyl substrates were found to release slowly. Self-assembled monolayers (SAMs) formed from nitrophenol or ethanolamine derivatives produce the expected quantity of alcohol following reductive release from gold powder.
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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) | 0.000 | 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 it