Diazepam → Methyl 5-chloro-3-phenyl-2H-isoindole-1-carboxylate

Participants

Reaction Steps

The starting material can be prepared from 7-chloro-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one and dimethylcarbonate in a manner analogous to that described in Example 1. After recrystallization from acetone, there is obtained 5-chloro-3-phenylisoindole-1-carboxylic acid methyl ester; melting point 208°-210° C. (decomposition).

Provenance & Evidence