Patent ID: 7709684
Filing Date: 2010-05-04
Classification: C07C

Abstract:
1. A process for preparing substituted biphenyls of the formula I in which the substituents are defined as follows: X is fluorine or chlorine; R R R n is 1, 2 or 3, where in case that n is 2 or 3, the R in which Hal is halogen and X and R 1 are as defined above, in the presence of a base and of a palladium catalyst selected from the group of: a) palladium-triarylphosphine or -trialkylphosphine complex with palladium in the zero oxidation state, b) salt of palladium in the presence of triarylphospine or trialkylphosphine as a complex ligand or c) metallic palladium, optionally applied to support, in the presence of triarylphosphine or trialkylphosphine, in a solvent, with a diphenylborinic acid III in which R 2 and n are as defined above, where the triarylphosphines or trialkylphosphines used may be substituted.