Cycloalkylidenemethylphenylacetic acid derivatives of formula (I): ##STR1## (wherein R.sup.1 represents hydrogen or alkyl and n is an integer from 1 to 3) are prepared by reacting a benzaldehyde acid compound of formula (II): ##STR2## with an enamine derivative of formula (III): ##STR3## (wherein R.sup.2 and R.sup.3 are various organic groups) and then hydrolizing the product. The use of the acid of formula (II) rather than its corresponding ester enables the reaction to be effected with a good yield and under moderate and economical reaction conditions.
公式(I)的环烷基亚甲基
苯乙酸衍
生物:##STR1##(其中R1代表氢或烷基,n是1至3的整数)通过将公式(II)的
苯甲酸化合物:##STR2##与公式(III)的烯胺衍
生物反应而制备出来:##STR3##(其中R2和R3是各种有机基团),然后
水解产物。使用公式(II)的酸而不是其对应的酯使得反应可以在良好的收率和适度经济的反应条件下进行。