| 摘要 |
1,153,101. Benzodiazepine derivatives preparation. F. HOFFMANN-LA ROCHE & CO., A.G. 1 June, 1967 [3 June, 1966], No. 25272/67. Heading C2C. Compounds of the general formula (wherein R represents a C 1-7 alkyl group, R<SP>1</SP> represents Cl, Br, NO 2 or CF 3 , R<SP>2</SP> represents a halogen atom and the broken lines denote optional substituents) and their acid addition salts are prepared by cyclizing a compound of the formula in the presence of a dehydrating system and, if desired, converting the product into an acid addition salt. |
