Interaction of PH3 with acetaldehyde in aqueous media and chemistry of [HO(Me)CH]4PCl
Why this work is in the frame
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Bibliographic record
Abstract
The known phosphonium chloride [HO(Me)CH] 4 PCl was prepared at ambient conditions from PH 3 and acetaldehyde in aqueous HCl, and characterized by elemental analysis and 1 H and 31 { 1 H} NMR spectroscopy. Attempts to obtain the tertiary phosphine [HO(Me)CH] 3 P via reaction of [HO(Me)CH] 4 PCl with Na 2 SO 3 or Et 3 N in aqueous media under Ar revealed that [HO(Me)CH] 3 P is unstable and equilibrates with the secondary phosphine [HO(Me)CH] 2 PH and acetaldehyde. A 1:4 reaction of [HO(Me)CH] 4 PCl with NaHSO 3 at room temperature under Ar affords first the oxide [HO(Me)CH] 2 P(O)H and then the phosphinic acid [HO(Me)CH] 2 P(O)OH. A 1:1 reaction of [HO(Me)CH] 4 PCl with Na 2 S 2 O 3 affords the sulfide [HO(Me)CH] 3 PS. 31 { 1 H} and 1 H NMR data for all the (α-hydroxyethyl)phosphorus species are reported for the first time.
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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) | 0.001 | 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 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