2-14C-oxazepam (z) d 4 C -(+)and -(-1 -7-chloro-l--methyl-5-phenyl-1,3,4,5-tetrahydro-3H-l,4-benzodiazepine-2--one (s and 2) as well as 2-14C-7-chloro-4-carbamoyl-l-methyl--5-phenyl-1,3,4,5-tetrahydro-3H-l,4-benzodiazepine-2-one (9-1 were synthesised from ~arbobenzoxy-glycine-1-~~C. The overall rad
A convenient preparation of 14C-labelled 5H-2,3-benzodiazepines
✍ Scribed by G. Zólyomi; T. Láng; J. Körösi; T. Hámori
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- French
- Weight
- 331 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
A convenient method for preparing 5__H__‐2,3‐benzodi‐azepines labelled with ^14^C was developed in which the corresponding phenylacetone derivatives were acylated by labelled aromatic carboxylic acid. In spite of the low yield, this method is advantageous in comparison the known ones because of the obtainable specific activity, which is a consequence of the few stages and simplicity of the synthesis.
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## Abstract Benzene oxide ‐[U‐^14^C] was prepared from benzene ‐(U‐^14^C) by modifications of methods described for the inactive compound. Benzene oxide‐[3.6–^3^H] was prepared by decomposition of 3.6‐bis‐trimethylsilyl‐1,4‐cyclohexadiene with tritiated water. bromination of the 1,4‐cyclohexadiene
## Abstract 7‐Chloro‐5‐(2‐chlorophenyl)‐1,3‐dihydro‐2H‐1,4‐benzodiazepin‐2‐one labeled with carbon‐14 in carbon 5 of the diazepine ring has been synthesized. The compound was prepared in a multistep synthesis from barium carbonate‐^14^C in an overall yield of 23%.
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