Patent ID: 8344156

Claim:
A method for producing a fluorine-containing acylacetic acid derivative represented by the following Formula (3), comprising obtaining a mixture containing a base, a compound represented by the following Formula (1), and a compound represented by the following Formula (2), and adding a halogenating agent to the mixture: wherein Rf represents an alkyl group having 1 to 6 carbon atoms which is substituted by at least one fluorine atom; wherein R1 and R2 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an aryl group which may be substituted, an arylalkyl group which may be substituted, or an acyl group having 1 to 6 carbon atoms which may be substituted, or together represent an atomic group that forms a 5- or 6-membered ring containing 0 or 1 hetero atom with the nitrogen atom to which R1 and R2 are bonded; R3 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an aryl group which may be substituted, or an arylalkyl group which may be substituted; and R4 represents an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an aryl group which may be substituted, or an arylalkyl group which may be substituted; wherein Rf, R1, R2, R3 and R4 have the same definitions as above.