Patent ID: 6777554
Filing Date: 2004-08-17
Classification: C07D

Abstract:
A process for preparing compound (VII) comprising reacting compound (V) with compound (VI) in an organic solvent: whereinX is selected from the group consisting of halogen and â€”OSO2R3; Ar is phenyl optionally substituted by halogen, alkoxy or other inert group; R1 is selected from the group consisting of hydrogen, alkyl, aralkyl, alkaryl, alkyloxycarbonyl, aryloxycarbonyl and aryl alkoxycarbonyl; R2 is selected from the group consisting of aryl and heteroaryl, wherein any one or more of said aryl and heteroaryl are optionally substituted by the group consisting of alkyl, halogen, alkoxy, nitro, acylamino, methylenedioxy, alkyl sulfonyl, aryl sulfonyl, alkaryl sulfonyl and aralkyl sulfonyl; and R3 is selected from the group consisting of alkyl, aryl, aralkyl and alkaryl.