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1. Synthesis of [N-methyl-3H]-7-chloro-1,3-dihydro-5-(2-fluorophenyl)-1-methyl-2 H-1,4-benzodiazepin-2- one (3H-fludiazepam) by phase transfer catalysis.

Author

Uozumi F, Maeda M, and Kojima M

Subjects
Catalysis, Hydrocarbons, Iodinated, Methylation, Anti-Anxiety Agents, Benzodiazepines, Diazepam analogs & derivatives, Isotope Labeling methods, Tritium
Abstract

[N-methyl-3H]-7-Chloro-1,3-dihydro-5-(2-fluorophenyl)-1-methyl-2H-1,4- benzodiazepin-2- one ( [3H]fludiazepam) was prepared by phase transfer catalytic N-methylation of the corresponding nor-derivative with [3H]methyl iodide [407 GBq/mmol (11 Ci/mmol)] in a radiochemical yield of 34%. The specific activity was 271.6 GBq/mmol (7.34 Ci/mmol).

Published
1984
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