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.
化合物公式为(I)的环烷基甲基
苯乙酸衍
生物:##STR1##(其中R.sup.1代表氢或烷基,n为1至3的整数)是通过将化合物公式为(II)的
苯甲酸醛化合物:##STR2## 与化合物公式为(III)的恩酰衍
生物反应得到的:##STR3##(其中R.sup.2和R.sup.3是不同的有机基团),然后
水解产物。使用公式(II)的酸而不是其对应的酯使反应能以良好的收率和温和经济的反应条件进行。