| 摘要 |
A process for producing cyclopentanone-2,3,5-tri- carboxylic triesters industrially advantageously. Namely, a process for the production of cyclopentanone-2,3,5-tri- carboxylic triesters represented by the general formula (IV), characterized by (1) reacting an itaconic diester represented by the general formula (I) with a metal salt of malonic diester represented by the general formula (II) to form a reaction mixture containing an adduct represented by the general formula (III) and then (2) treating the reaction mixture with an alcohol, a metal alkoxide, or a mixture of both: (I) (II) (III) (IV) wherein R<1>, R<2>, R<3>, R<4>, R<5>, R<6> and R<7> are each optionally substituted alkyl; and M is an alkali metal. |
