Dihydro benzodiazpine derivs with tranqui- - lising, muscle-relaxant, antispasmodic and

摘要

(I) (where R1 is H, 1-4C alkyl or 4-7C cycloalkylmethyl; R2 is H or halogen, nitro, 1-4C alkoxy or CF3 and R3 is H or halogen, 1-4C alkyl or alkoxy), and their salts, are prepd. by condensing a diphenylmethylene imine deriv. (where X is halogen) with an ethylene diamine deriv. R1-NH-CH2-CH2-NH2, pref. in presence of acid acceptor and Cu (salt) catalyst, and if necessary converting the product to its salt.