1,2-Propanediol derivatives.

摘要

Optically active compounds useful as components of liquid crystal compositions and chiral liquid crystal compositions containing them, which optically active compounds have the formula: in which R<1> is a C1-C20 alkyl or C1-C20 alkoxy group, a hydrogen or halogen atom or a cyano group; each represents a group: (in which X is a hydrogen or halogen atom or a cyano group); R<2> is a C1-C20 alkyl group; and m and n are each 0 or 1.