2-Propenal, 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-(2<i>E</i>)
Bibliographic record
Abstract
[153725-01-0] C9H15BO3 (MW 182.02) InChI = 1S/C9H15BO3/c1-8(2)9(3,4)13-10(12-8)6-5-7-11/h5-7H,1-4H3/b6-5+ InChIKey = YVBIZZFCPNAJIA-AATRIKPKSA-N (diene or dienophile used in cycloaddition reactions; electrophile in 1,2-addition reactions) Alternate Name: (E)-3-boronoacrolein pinacolate. Physical Data: bp 110–120 °C/10 mmHg.1 Solubility: toluene, DCM, THF, Et2O, CHCl3, MeOH. Form Supplied in: colorless liquid; not commercially available. Analysis of Reagent Purity: IR (film): 1685, 1615 cm−1; 1H NMR (300 MHz, CDCl3):δ 1.31 (s, 12H), 6.70 (d, J = 18.1, 1H), 6.80 (dd, J1 = 18.1, J/2 = 7.4, 1H), 9.61 (d, J = 7.4, 1H); 13C NMR (75.5 MHz, CDCl3): δ 24.8, 84.4, 141.7, 147.0, 195.02; MS, m/e 81 (50), 95 (27), 109 (83), 125 (81), 140 (52), 167 (100), 183 (57); exact mass calcd for C9H15O3B 182.1115, found 182.1109.1 Preparative Methods: generally prepared from propionaldehyde diethyl acetal. See references for details.1-6 Purification: purified by reduced pressure bulb-to-bulb distillation (oven temperature at 110–120 °C, 10 mmHg).1 Handling, Storage, and Precautions: this compound is not very stable to atmospheric conditions; therefore, it should be kept under an inert atmosphere, preferably at reduced temperature. Treatment of this boronic ester with aqueous base should be avoided as it is sensitive to aqueous protodeboronation.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 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 | 0.001 | 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".