Patent ID: 8044231

Claim:
A process for preparing an alkyl dihaloacetoacetate of formula (I) in which X is fluorine, chlorine or CF 3 , X′ is fluorine, chlorine or bromine, R 1 is selected from H, C 1-12 -alkyl radicals, C 5-18 -aryl, Cl, bromine and fluorine and R 3 , independently of R 1 , is selected from C 1-12 -alkyl, C 5-18 -aryl or C 7-19 -arylalkyl radicals, by reacting α,α-dihaloamines of the formula (III) in which R 4 is selected from C 1-12 -alkyl radicals, C 5-18 -aryl radicals or C 7-19 -arylalkyl radicals, R 5 , independently of R 4 , is selected from C 1-12 -alkyl radicals, C 5-18 -aryl radicals or C 7-19 -arylalkyl radicals, with a carboxylic ester of the formula (II) in which R 2 is selected from H, C 1-12 -alkyl radicals, C 5-18 -aryl, Cl, bromine and fluorine.