Abstract: [1,2]-fused 1,4-benzodiazepine compounds are disclosed corresponding to the general formula I ##STR1## wherein X is an oxygen or sulfur atom or an optionally substituted imino group, R.sub.1 is a hydrogen or halogen atom, lower alkyl radical, a lower alkoxy radical or a nitro group and R.sub.2 is a hydrogen or halogen atom, a lower alkyl radical, a lower alkoxy radical or a nitro group, or if R.sub.1 is a hydrogen atom, R.sub.2 may also be a lower alkylthio radical, or, if R.sub.1 is a hydrogen atom and X is a sulfur atom or an imino group, R.sub.2 may be a trifluoromethyl radical; or R.sub.1 and R.sub.2 are bonded to adjacent carbon atoms and together denote a methylenedioxy or ethylenedioxy radical; R.sub.3 is an optionally substituted furyl, thienyl, pyrrolyl or pyridyl radical and n is zero or, if R.sub.3 is furyl or thienyl, n may be 0 or 1. The compounds may be in the form of their optical isomers or acid addition salts. The compounds exhibit neuroleptic properties.

Abstract: [1,2]-fused 1,4-benzodiazepine compounds are disclosed corresponding to the general formula I ##STR1## wherein X is an oxygen or sulfur atom or an optionally substituted imino group, R.sub.1 is a hydrogen or halogen atom, lower alkyl radical, a lower alkoxy radical or a nitro group and R.sub.2 is a hydrogen or halogen atom, a lower alkyl radical, a lower alkoxy radical or a nitro group, or if R.sub.1 is a hydrogen atom, R.sub.2 may also be a lower alkylthio radical, or, if R.sub.1 is a hydrogen atom and X is a sulfur atom or an imino group, R.sub.2 may be a trifluoromethyl radical; or R.sub.1 and R.sub.2 are bonded to adjacent carbon atoms and together denote a methylenedioxy or ethylenedioxy radical; R.sub.3 is an optionally substituted furyl, thienyl, pyrrolyl or pyridyl radical and n is zero or, if R.sub.3 is furyl or thienyl, n may be 0 or 1. The compounds may be in the form of their optical isomers or acid addition salts. The compounds exhibit neuroleptic properties.

Abstract: Disclosed are 7-bromo-5-(2-halophenyl)-1H-2,3-dihydro-1,4-benzodiazepines of the formula I ##STR1## in which R.sub.1 is a hydrogen atom or a lower alkoxy or alkanoyloxy radical and R.sub.2 is a halogen atom. The compounds possess psychopharmacological, and especially anti-aggressive properties. To manufacture compounds of formula I, corresponding 2-halomethyl-7-bromo-5-(2-halophenyl)-1H-2,3-dihydro-1,4-benzodiazepines are cyclized to corresponding 7-bromo-1,2-methylene-5-(2-halophenyl)-1H-2,3-dihydro-1,4-benzodiazepines and in these the aziridine ring is opened through treatment with a lower alcohol or a lower carboxylic acid in the presence of a Lewis acid.