## 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.
Synthesis of phenyl [1-14C]acetylene and 1,4–diphenyl[1,4-14C2] butadiyne
✍ Scribed by Som N. Dhawan; Jacques Kagan
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- French
- Weight
- 218 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Phenyl [1‐^14^C] acetylene (0.012mCi/mmole) was synthesized in 12.5% yield from [1‐^14^C] acetic acid through [1‐^14^C] acetophenone, its semicarbazone, and 4‐phenyl‐[4‐^14^C] 1,2,3‐selenadiazole obtained by selenium dioxide oxidation. Oxidative coupling gave 1,4‐diphenyl [1,4‐^14^C~2~] butadiyne in 80% yield.
📜 SIMILAR VOLUMES
## Abstract Diazepam‐^14^C and demethyldiazepam‐^14^C are synthesized from glycine‐1‐^14^C. Addition of diketene to diazepam‐^14^C leads to ketazolam‐^14^C. The reaction conditions for the formation of ketazolam from diazepam is studied using high‐pressure liquid chromatography in conjunction with
## Abstract Carbon‐14 labeled 4‐[4‐[2‐[2‐[bis(4‐chlorophenyl)methoxyethylsulfonyl] [1‐^14^C]ethoxy]phenyl]‐1,1,1‐trifluoro‐2‐butanone was prepared in a six step radioactive synthesis from 2‐bromo[1‐^14^C]acetic acid. The overall radiochemical yield was 2.2%. The specific activity of the final produ
Specifically labelled phenylacetic acid and mandelic acid derivatives, metabolites of L-Dopa, have been synthesized via the intermediary labelled benzyl alcohols, which were prepared by reduction of the methyl esters of the appropriate benzoic acids. The benzyl alcohols have been converted to the co