Optically active compounds having a plurality of asymmetric carbon atoms.

摘要

Optically active compounds for use in chiral liquid crystal compositions have the formula: <CHEM> in which R<1> is a straight or branched alkyl, alkoxy, alkanoyl, alkanoyloxy, alkoxycarbonyl or alkoxycarbonyloxy group each containing up to 15 carbon atoms, a hydrogen or halogen atom or a cyano group; R<2> is an optically active group having from 2 to 20 skeletal atoms in its chain; <CHEM> (wherein X is hydrogen or halogen atom or a cyano group): l is an integer of from 1 to 10; m is o or 1; and * indicates an asymmetric carbon atom. a