Process for producing a 2-hydroxy-3-butenoic acid derivative having the formula ##STR1## wherein R.sup.1 is an aliphatic, alicyclic or aromatic group and R.sup.2 is a lower alkyl group by treating a glycidic acid ester derivative having the formula ##STR2## wherein R.sup.1 and R.sup.2 are as defined above in the presence of an acid.
制备具有如下通式的
2-羟基-3-丁烯酸衍
生物的方法,其中R1为脂肪族、脂环族或芳香族基团,R2为低级烷基基团,该方法包括在酸性条件下处理具有如下通式的环氧酸酯衍
生物,其中R1和R2如上定义。