Patent ID: 8203015

Claim:
A process for preparing a compound of the general formula (I), in which X 1 and X 2 are each independently fluorine, chlorine, bromine, hydrogen, C 1-12 -alkyl, C 1-12 -haloalkyl, C 5-18 -aryl, C 7-19 -alkylaryl or C 7-19 -arylalkyl, comprising, reacting a fluorinated carboxamide of the formula (II) in which X 1 and X 2 are each as defined above, in the presence of a base and a catalytic amount of a fluorinated carboxylic acid of the formula (III) where Y 1 and Y 2 are each independently fluorine, chlorine, bromine, hydrogen, C 1-12 -alkyl, C 1-12 -haloalkyl, C 5-18 -aryl, C 7-19 -alkylaryl or C 7-19 -arylalkyl, with an acid halide of the formula (IV) in which R 1 is C 1-12 -alkyl, C 3-8 -cycloalkyl, C 1-12 -haloalkyl, C 5-18 -aryl, C 7-19 -arylalkyl or C 7-19 -alkylaryl, and Hal is halogen.