Bibliographic record
Abstract
(1; R1 = Et, R2 = H) [10490-06-9] C6H12O2S2 (MW 180.32) InChI = 1S/C6H12O2S2/c1-3-9-6(5(7)8)10-4-2/h6H,3-4H2,1-2H3,(H,7,8) InChIKey = XMLOHHSISONECN-UHFFFAOYSA-N (2; R1 = (CH2)2, R2 = H) [5616-65-9] C4H6O2S2 (MW 150.24) InChI = 1S/C4H6O2S2/c5-3(6)4-7-1-2-8-4/h4H,1-2H2,(H,5,6) InChIKey = DSOVOUOPKYLGID-UHFFFAOYSA-N (3; R1 = (CH2)3, R2 = H) [20461-89-6] C5H8O2S2 (MW 164.27) InChI = 1S/C5H8O2S2/c6-4(7)5-8-2-1-3-9-5/h5H,1-3H2,(H,6,7) InChIKey = BZBYEAWKJNCPLB-UHFFFAOYSA-N (4; R1 = Et, R2 = Me [38564-39-5] C7H14O2S2 (MW 194.35) InChI = 1S/C7H14O2S2/c1-4-10-7(11-5-2)6(8)9-3/h7H,4-5H2,1-3H3 InChIKey = BTADPPRQZFQLLV-UHFFFAOYSA-N (5; R1 = Et, R2 = Et) [20461-95-4] C8H16O2S2 (MW 208.38) InChI = 1S/C8H16O2S2/c1-4-10-7(9)8(11-5-2)12-6-3/h8H,4-6H2,1-3H3 InChIKey = DGQHHBMWVOYSHU-UHFFFAOYSA-N (6; R1 = (CH2)2, R2 = Et) [20461-99-8] C6H10O2S2 (MW 178.30) InChI = 1S/C6H10O2S2/c1-2-8-5(7)6-9-3-4-10-6/h6H,2-4H2,1H3 InChIKey = OMCSHTHLIQOHDD-UHFFFAOYSA-N (7; R1 = (CH2)3, R2 = Me) [56579-84-1] C6H10O2S2 (MW 178.30) InChI = 1S/C6H10O2S2/c1-8-5(7)6-9-3-2-4-10-6/h6H,2-4H2,1H3 InChIKey = KAXSFBNZPWBKDH-UHFFFAOYSA-N (8; R1 = (CH2)3, R2 = Et) [20462-00-4] C7H12O2S2 (MW 192.33) InChI = 1S/C7H12O2S2/c1-2-9-6(8)7-10-4-3-5-11-7/h7H,2-5H2,1H3 InChIKey = ANEDZEVDORCLPM-UHFFFAOYSA-N (α-keto equivalent; alkylation of the anions, aldol condensations, and both 1,2- and 1,4-additions to α,β-unsaturated compounds; thioketene and α-oxo dithioester precursor) Alternate Names: (1) bis(ethylthio)acetic acid; (2) 1,3-dithiolane-2-carboxylic acid; (3) 1,3-dithiane-2-carboxylic acid. Physical Data: (1) bp 110 °C/0.2 mmHg. (2) mp 90–91 °C. (3) mp 114.5–116 °C. (4) bp 125–127 °C/5 mmHg. (5) bp 70 °C/0.1 mmHg. (8) bp 105 °C/0.6 mmHg. (7) bp 102 °C/2 mmHg. (8) bp 75–77 °C/0.2 mmHg. Preparative Methods: esters (5), (6), and (8) are available from commercial sources. The thioacetal acids may be prepared by thioacetalization of glyoxylic acid monohydrate3 or by reaction on the appropriate thiol(ate) with 2,2-dichloroacetic acid (or the diethyl acetal) directly4 or under phase transfer5 conditions using Aliquat 336. The esters may be obtained via similar exchange processes or via acid-catalyzed esterification of the corresponding acids.
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 machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.043 | 0.025 |
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 source (direct Gemma or distilled Codex), 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".