Process for Producing Cyclopentanone-2, 3, 5-Tricarboxylic Acid Triester

摘要

The present invention provide a process that allows the industrially advantageous production of a cyclopentanone-2,3,5-tricarboxylic acid triester. Namely, the present invention provides a process for producing a cyclopentanone-2,3,5-tricarboxylic acid triester represented by the general formula (IV), characterized by comprising: (1) allowing an itaconic acid diester represented by the general formula (I) to react with a metal salt of malonic acid diester represented by the general formula (II) to obtain a reaction mixture containing an adduct represented by the general formula (III); and then (2) allowing said reaction mixture to react with an alcohol or a metal alkoxide, or a mixture thereof: wherein R¹, R², R³, R⁴, R⁵, R⁶, and R⁷ each independently represents an alkyl group which may have a substituent, and M represents an alkali metal.