Patent ID: 8653295

Claim:
A process for producing an α-trifluoromethyl-α,β-unsaturated ester of the general formula [2], comprising: reacting an α-trifluoromethyl-α-hydroxy ester of the general formula [1] with sulfuryl fluoride (SO 2 F 2 ) in the presence of an organic base where R 1 and R 2 each independently represent a hydrogen atom, an alkyl group, a substituted alkyl group, an alkenyl group, a substituted alkenyl group, an alkynyl group, a substituted alkynyl group, an aromatic ring group, a substituted aromatic ring group, an alkylcarbonyl group, a substituted alkylcarbonyl group, an alkoxycarbonyl group, a substituted alkoxycarbonyl group, an arylcarbonyl group, a substituted arylcarbonyl group, a cyano group or a nitro group; R 3 represents an alkyl group or a substituted alkyl group; and the wavy line in the general formula (2) indicates that the double bond is in an E-isomer configuration, a Z-isomer configuration or a mixture thereof.