3-cyano-4,5-dihydro-4-keto-1h-1,2,5-benzotriazepines - with cns depressant activity

摘要

Title cpds of formula: (where R2 is H and R is 4-chlorobenzyl, cyclohexylmethyl, n-butyl, 4-methoxybenzyl, benzyl, phenyl, cyclohexyl, alpha-methylbenzyl, or R2 is Cl and R is methyl or benzyl) NH2 are prepd by diazotisation of cpds of formula- obtd by redn of the corresp. nitro cpd obtd by condensing o-nitroanilines with cyanoacetic acid (deriv).