申请人:SUMIKA FINE CHEMICALS Co., Ltd.
公开号:EP0652213A1
公开(公告)日:1995-05-10
A method for producing an alkyl 3-phthalidylideneacetate has the step of treating phthalic anhydride with a monoalkyl malonate or a salt thereof having the following formula:
MOCO-CH₂-COOR,
wherein M represents a hydrogen atom, K, Na, Li, or NH₄, and R represents a lower alkyl group having 1 to 5 carbon atoms. By using the above method, the desired alkyl 3-phthalidylideneacetate can be obtained at a high yield.
一种生产 3-邻苯二甲酰亚基乙酸烷基酯的方法,其步骤是用具有下式的丙二酸单烷基酯或其盐处理邻苯二甲酸酐:
MOCO-CH₂-COOR、
其中 M 代表氢原子、K、Na、Li 或 NH₄,R 代表具有 1 至 5 个碳原子的低级烷基。通过上述方法,可以高产率获得所需的 3-邻苯二甲酰亚基乙酸烷基酯。