Lossen Rearrangement Reaction of Aromatic and Aliphatic Hydroxamates
Bibliographic record
Abstract
The main goal of this research is to explore a potential of the most green and non-toxic possible route to the synthesis of industrially important chemicals, such as isocyanates and amines, based on the bio-based starting materials. In this work, we demonstrated the synthesis of 1,4-diisocyanatobenzene and 1,4- diisocyanatobutane in three steps. First step is the synthesis of hydroxamic acid, second step involves a conversion of the hydroxamic acid to its corresponding hydroxamate, and the final step is the transformation of the hydroxamate into the corresponding isocyanate by Lossen rearrangement reaction. The starting materials for PPDI and BDI are diethyl terephthalate and dimethyl adipate, respectively. Both esters are derivatives of acids that are now available from biomass. The final products were characterized IR, NMR, MS, TGA, and DSC.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 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".