BENZODIAZEPINE DERIVATIVES,THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

1309869 Carbamates F HOFFMANN-LA ROCHE & CO AG 19 April 1971 [11 Feb 1970] 31428/72 Divided out of 1309868 Heading C2C Compounds of the general formula (R 3 = H, C 1-7 alkyl, aryl; R 4 = C 1-7 alkyl; R 5 = C 1-7 alkyl, aryl) are prepared by acylating a compound of the formula with a reactive derivative of R 5 SO 3 H. They may be used for N-substituting primary and seconddary amides with the group -CHR 3 NHCOOR 4 . The preparation of N-benzyl-N-carbethoxyhydroxylamine is described.