## Abstract A convenient synthesis of the pharmacological intermediate 2‐pyrrolidione‐5‐^14^C, was developed using potassium cyanide ^14^C as starting material. Potassim cyanide‐^14^C was converted to 2‐pyrrolidinone‐5‐^14^C in an overall 56% radiochemical yield.
Synthesis of [2,3,4,5-14C]-1-vinyl-2-pyrrolidinone
✍ Scribed by George A. Digenis; J. S. McClanahan; Pei-Lin Chen
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- French
- Weight
- 257 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
An efficient small scale synthesis of ^14^C labeled 1‐vinyl‐2‐pyrrolidinone (NVP) is described. The cyclization of commercially available [1,2,3,4‐^14^C]‐γ‐aminobutyric acid (GABA) gives [2,3,4,5‐^14^C]‐2‐pyrrolidinone which is vinylized with vinyl acetate via a sodium tetrachloropalladate catalyst to give good yields of [2,3,4,5‐^14^C]‐1‐vinyl‐2‐pyrrolidinone.
📜 SIMILAR VOLUMES
## Abstract The synthesis of 1,1,3,3‐tetraethoxypropane‐1,2,3‐^14^C~3~ from uniformly labeled paraldehyde is described. The synthesis involves three steps and proceeds in an overall yield of 25%. The final product is greater than 95% radiochemically pure and it is stable indefinitely when stored as
## Abstract 2,2′,5′,2″– [2′,5′ – ^14^C~2~] Terthienyl and 1,4–Bis (2–Thienl) [1,4–^14^C~2~] butadiyne were synthesized from [14~C~] formic acid.
## Abstract Modification of the traditional. Gomberg reaction conditions provides a simple, economical. route to 2‐chlorobiphenyl‐1′,2′,3′,4′,5′,6′‐^14^__C__~6~ __(I). The reaction of benzene‐U‐__^14^__C__~6~ __with an excess of the diasonium salt from__ 2__‐chloroaniline produces__ ^14^__C‐labelle
## Abstract 7‐Chloro‐1,3‐dihydro‐5‐(2‐fluorophenyl)‐1‐methyl‐2H‐1,4‐benzodiazepin‐2‐one (Fludiazepam) (I), an anti‐anxiety agent, was labelled with carbon‐14 at C‐5 position for metabolic studies. The reaction sequence for the synthesis is shown in Fig. 2. o‐Fluorobenzoic‐^14^C acid (IV) was prepar