Patent ID: 7022847
Filing Date: 2006-04-04
Classification: A61P,C07D

Abstract:
1. Process for preparing a compound of the formula (I) in which R R R comprising reaction of a compound of the formula (II) in which R 2 , R 3 and R 4 have the meaning indicated above, with a compound of the formula (III) in which R X represents halogen; in the presence of a base and, where appropriate, of a metal iodide in an organic solvent to give a compound of the formula (IV) in which R [A] with iodine in the presence of a base in a solvent, subsequent reaction with a metal cyanide in a solvent and reaction with an acid or [B] with bromine in acidic medium, subsequent reaction with a metal cyanide in a solvent and reaction with an acid.