Patent ID: 7129263
Filing Date: 2006-10-31
Classification: A61P,C07D

Abstract:
1. A process for preparing a compound of formula wherein X is halogen, —OH, —CN, —C 1 to C 4 alkyl substituted with one to three halogen atom, —NH 2 , —NH(C 1 –C 4 alkyl), —N(C 1 –C 4 alkyl)(C 1 –C 4 alkyl), —C(═O)NH 2 , —C(═O)NH(C 1 –C 4 alkyl), —C(═O)N(C 1 –C 4 alkyl)(C 1 –C 4 alkyl), —NHS(═O) 2 H, or —NHS(═O) 2 R 4 ; R R and n is one or zero; R comprising reacting a compound of formula with a compound of formula in the presence of a reducing agent and an organic solvent.