Abstract: Condensation of Meldrum's acid with crotonaldehyde or 3-hydroxybutanal in the presence of ethylene diammine diacetate yielded 2-butenylidene Meldrum's acid rather than parasorbic acid as Stevenson and Weber, then we studied the possibility of 2-butenylidene Meldrum's acid to form a cyclo-compound.

Key words: crotonaldehyde, 3-hydroxybutanal, Meldurm's acid, ethylene diammine diacetate, condensation reaction

摘要： 利用梅仲酸与巴豆醛及3-羟基丁醛在乙二胺二乙酸盐存在进行反应，合成了2-丁烯亚基梅仲酸，并对它的进一步成环反应的可能性进行了研究。

关键词: 巴豆醛, 3-羟基丁醛, 梅仲酸, 乙二胺二乙酸盐, 缩合反应