Patent ID: 6384289
Filing Date: 2002-05-07
Classification: C07C,C07D

Abstract:
A process for the production of 1,4-bis(difluoroalkyl)benzene derivative of the formula: where k is 0, G stands for a halogen group, and m is 0, which process comprises reacting compound (A) selected from the group consisting of: with a fluoride-containing species, the molar ratio of the fluorine-containing species to compound (A) being in the range of 20-40, in the presence of a bromine-containing compound, which is in an amount of 2 to 3 equivalences to the amount of compound (A), in an organic solvent at âˆ’80Â° C. to 30Â° C., the final concentration of compound (A) being in the range of 3 to 30% by weight.