PROCESS FOR THE PREPARATION OF BENZODIAZEPINE COMPOUNDS

A process for the preparation of a benzodiazepine compound having the formula WHEREIN R1, R2 and R3 may be the same or different and each represents HYDROGEN ATOM, A LOWER ALKYL GROUP, A LOWER ALKOXY GROUP, A HALOGEN ATOM, HYDROXY GROUP, NITRO GROUP, CYANO GROUP, AN ACYL GROUP, TRIFLUOROMETHYL GROUP, AMINO GROUP, AN ACYLAMINO GROUP, A N-mono(lower alkyl)amino group, A N-di(lower alkyl)amino group, AN ACYLOXY GROUP, CARBOXYL GROUP, AN ALKOXYCARBONYL GROUP, CARBAMOYL GROUP, A N-mono(lower alkyl)carbamoyl group, A N-di(lower alkyl)carbamoyl group, A LOWER ALKYLTHIO GROUP, A LOWER ALKYLSULFINYL GROUP OR A LOWER ALKYLSULFONYL GROUP; R4 represents HYDROGEN ATOM, A LOWER ALKYL GROUP, A CYCLOALKYL GROUP, AN ARALKYL GROUP, AN ARYL GROUP OR PHENACYL GROUP; R5 represents HYDROGEN ATOM OR A LOWER ALKYL GROUP; A represents AN ALKYLENE GROUP WHICH MAY BE STRAIGHT OR BRANCHED; AND Y represents OXYGEN ATOM OR SULFUR ATOM WHICH COMPRISES REACTING A COMPOUND HAVING THE FORMULA WHEREIN R1, R2, R3, R4, Y and A are as defined above or a mixture of these compounds with a reactive derivative of a compound having the formula WHEREIN Q represents an acid radical of a reactive ester and R5 is as defined above.