申请人:Dainippon Ink and Chemicals, Inc.
公开号:US05064564A1
公开(公告)日:1991-11-12
The present invention discloses an optically active compound represented by the following general formula (I): ##STR1## wherein R.sup.1 represents an alkyl, alkoxyl, or alkoxyalkanoyloxy group which has 1 to 18 carbon atoms and may be substituted with fluorine, chlorine, or cyano group; R.sup.2 represents an alkyl group having 1 to 18 carbon atoms; ##STR2## m is 0 or 1; Y represents a single bond, --CH.sub.2 O--, or --COO--; Z represents a single bond or --COO--; and C* and C** each independently represents an asymmetric carbon atom of the (R) and (S) configuration, an intermediate therefor being represented by the following general formula (II): ##STR3## wherein R.sup.2 represents an alkyl group having 1 to 18 carbon atoms, n is 0 or 1, and C* and C** each independently represents an asymmetric carbon atom of the (R) or (S) configuration, a process for producing the intermediate, and a liquid-crystal compound using the optically active compound.
本发明揭示了一种光学活性化合物,其表示为以下通式(I):##STR1## 其中,R.sup.1代表具有1至18个碳原子的烷基,烷氧基或烷氧基酰氧基,并且可以被氟,氯或氰基取代; R.sup.2代表具有1至18个碳原子的烷基; ##STR2## m为0或1; Y代表单键,--CH.sub.2 O--或--COO--; Z代表单键或--COO--; C*和C**分别独立地表示具有(R)和(S)构型的不对称碳原子,其中其中间体表示为以下通式(II):##STR3## 其中,R.sup.2代表具有1至18个碳原子的烷基,n为0或1,C*和C**分别独立地表示具有(R)或(S)构型的不对称碳原子,还公开了制备中间体的方法以及使用光学活性化合物的液晶化合物。