Patent ID: 7358387

Claim:
A process for preparing 2-dihaloacyl-3-aminoacrylic esters of formula (I) in which R, R 1 , and R 2 are each independently C 1 -C 4 -alkyl, and X 1 and X 2 are each independently fluorine, chlorine, or bromine, comprising reacting an acid halide of formula (II) in which Hal is fluorine, chlorine, or bromine, and X 1 and X 2 are each independently fluorine, chlorine, or bromine, with a dialkylaminoacrylic ester of formula (III) in which R, R 1 , and R 2 are each as defined for formula (I), in a water-immiscible organic solvent in the presence of a base, wherein the base is an inorganic aqueous base, pyridine, or a pyridine derivative.