申请人:Sumitomo Chemical Company, Limited
公开号:US05019298A1
公开(公告)日:1991-05-28
Disclosed are optically active aromatic carboxylic acid derivatives represented by the formula (I): ##STR1## (wherein R.sub.2 represents an alkoxyalkyl group having 1 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms, which alkyl group may be substituted with a halogen atom; represents a number of 1 or 2; m represents a number of 0 or 1; and * indicates asymmetric carbon atom) and a process for producing such derivatives through the following reaction steps: ##STR2## The optically active aromatic carboxylic acid derivatives represented by the above-described formula (I) are useful as a liquid crystal material and can be also utilized as an intermeidate for the preparation of pharmaceuticals, agricultural chemicals and the like.
本发明涉及一种光学活性芳香羧酸衍生物,其化学式为(I):##STR1## 其中,R.sub.2代表具有1至20个碳原子的烷氧烷基或具有1至20个碳原子的烷基,该烷基可以被卤素原子取代;表示数字1或2;m表示数字0或1;*表示不对称碳原子。本发明还涉及通过以下反应步骤制备这种衍生物的方法:##STR2## 上述化学式(I)所表示的光学活性芳香羧酸衍生物可用作液晶材料,并可用作制备药物、农药等中间体。