An alpha-pivaloyl-substituted acetic acid ester of the formula (H.sub.3 C).sub.3 CCOCH.sub.2 COOR, wherein R is an optionally-substituted alkyl, aryl, alkaryl, or aralkyl group, is prepared by (a) reacting an alpha-pivaloyl-substituted malonic acid ester with a base selected from the class consisting of alkali metal alkoxides and compounds of the formula MXY, wherein M is an alkaline earth metal, X is an alkoxy group, and Y is either an alkoxy group or a halogen atom, and (b) acidifying the resulting reaction mixture.
公式为(H.sub.3 C).sub.3 CCOCH.sub.2 COOR的α-
戊二酸酯,其中R为可选取代的烷基、芳基、烷基芳基或芳基烷基,通过以下步骤制备:(a)将α-
戊二酸酯与从碱
金属烷氧化物和化合物MXY中选择的碱
金属碱基反应,其中M为碱土
金属,X为烷氧基,Y为烷氧基或卤素原子;(b)酸化所得的反应混合物。