A process for the manufacture of benzodiazepine derivatives which comprises reacting 2-amino-5-chloro-benzophenone with a primary amine H.sub.2 N--R.sub.1 to give an imine which is reacted with an amino-ester ##STR1## to give a ketimine said ketimine being then converted to a benzodiazepine derivative.
一种制造苯二氮平衍
生物的工艺,包括将2-
氨基-5-
氯苯基酮与一种一级胺H.sub.2 N--R.sub.1反应得到
亚胺,然后将该
亚胺与一种
氨基酯##STR1##反应得到酮
亚胺,该酮
亚胺然后转化为苯二氮平衍
生物。