4-FLUORO-3-OXOCARBOXYLIC ESTERS AND PROCESS FOR PRODUCING THE SAME

摘要

The present invention is to provide 4-fluoro-3-oxocarboxylates represented by the following formula (1): <CHEM> wherein R<1> represents an alkyl group or an aryl group; R<2> and R<3> each represent a hydrogen atom or an alkyl group; and R<4> represents an alkyl group, and a process for preparing a 4-fluoro-3-oxocarboxylate represented by the above formula (1), which comprises allowing a 2-fluorocarboxylate represented by the following formula (2): wherein R<1> and R<2> have the same meanings as defined above; <CHEM> and R<5> represents an alkyl group, to react with a carboxylate represented by the following formula (3): <CHEM> wherein R<3> and R<4> have the same meanings as defined above, in the presence of a base.