New epoxide initiators for the controlled synthesis of functionalized polyisobutylenes
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
The mechanism of initiation was investigated in isobutylene (IB) polymerizations initiated by epoxidized α-methylstyrene (MSE) and 1,2-epoxy-2,4,4-trimethylpentane (TMPO) in conjunction with TiCl4. The proposed mechanism predicts primary OH head groups and tertiary Cl end groups in the PIB. Model studies conducted with MSE/TiCl4 and diisobutylene lead to ring closure yielding a substituted furanyl structure. Real-time fiber-optic refractive index monitoring was used to follow the initiation with the TMPO/TiCl4 system. It was found that the cleavage of TMPO proceeds simultaneously by SN1 and SN2 mechanisms as proposed. The carbocation forming by the SN1 route is proposed to initiate the polymerization of IB, but it was shown that excess TiCl4 relative to TMPO was necessary for propagation. Isomerization and polyether formation by the SN2 pathway lead to side reactions, reducing the initiating efficiency.
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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 | 0.001 |
| 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 | 0.000 |
| Insufficient payload (model declined to judge) | 0.025 | 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