A process for the manufacture of imidazodiazepine derivatives

Details A process for the manufacture of imidazodiazepine derivatives A process for the manufacture of imidazodiazepine derivatives

C - Chemistry, Metallurgy

07

D

C07D 487/00 (2006.01) C07D 487/04 (2006.01) C07D 495/14 (2006.01)

Patent

CA 2195615

A process for the manufacture of compounds of formula I Image wherein A together with the two carbon atoms denoted as .alpha. and .beta. represents one of the groups Image R1 represents cyano or a group of the formula -COOR4, R2 represents hydrogen, R3 represents lower alkyl, or R2 and R3 together signify a di- or trimethylene group, R4 represents lower alkyl or benzyl; and R5, R6 each signify hydrogen, halogen, trifluoromethyl, lower alkoxy or nitro and the carbon atom denoted by y has the S-configuration when R2 is different from hydrogen which process comprises reacting a compound of the formula Image wherein A, R2 and R3 have the significance given above and X represent a halogen atom, in the presence of a base with a compound of the formula Image wherein R7 is lower alkyl or cycloalkyl and R1 has the significance given above.

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