## Abstract 2‐Thenoic acid (^14^C = 0) 1 is prepared in 75 % radioactive yield by carbonation with ^14^CO~2~ of 2‐thienyL‐magnesium bromide. Boiling of 1 with oxalyl chloride gives rise to 2‐thenoylchloride (^14^CO) which is not isolated and is condensed with 2,3 dichLoroanisoLe under FrieLdeL‐Graf
Synthese d'Acide Benzisoxazole-1, 2 Acetique-3 (14C-α) et (14c-β)
✍ Scribed by P. Thourel; J. P. Noel; J. P. Beaucourt
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- French
- Weight
- 355 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Service der Ilol&culer )I.rqu&er CXN-SACLAY 91191 GIF-SUR-WETTE CEDKX M I SIII+UBY I The preparations of 1.~-bcnsiroxaso~e-3-.c.tic acid labelled with 14C in porition a o r B of the ride chain are dercribed. a-14C acid war obtained from 4-hydroxy cormrarin [3-14C] via Prier rearrangewnt of phenyl acetate [methyl-B -l4C acid war ryntherized from 4-hydroxy comarin [Z-14C] obtained from "C-diethy1 carbonate. Labelled poritionr were determined by purr spectrometry and were in agreem8nt with the propored reaction rchew . 14 C].
📜 SIMILAR VOLUMES
## Abstract The syntheses of disodium 6‐(2‐phenyl‐2‐sulfoacetamido‐1‐^14^C) peniaillanate (IV) and 6‐(2‐isobutyl‐β,γ‐ ^3^H~2~‐sulfo‐2‐phenyl‐acetamido‐1‐^14^C) penicillanic acid (XII) are described. The optically active D(‐)‐IV was obtained by the fractional crystallization of diastereoisomeric mix
Carbonatation o f 3-trifluoromethylthio phenylmagnesiwn bromide 2 w i t h 14C02 leads t o (carboxyl-14C) 3-trifluoromethylthio benzofc acid 3 . Reduction of t h e l a t t e r w i t h borane-methyl s u l f i d e compZex (CH312S-BH3 i n presence of trimethyl borate gives r i s e t o 3-trifluoromethylt