2-Substituted-alkyl ether and liquid crystal composition.

摘要

2-Substituted-alkyl ethers having an optically active group and useful as components of ferroelectric liquid crystal compositions and liquid crystal compositions, have the formula: in which R<1> is a straight or branched chain alkyl, alkoxy, alkanoyl, alkanoyloxy or alkoxycarbonyl group containing up to 18 carbon atoms; R<2> is a straight or branched C2-C15 alkyl group, are each (in which Y is a halogen atom or a methyl or methoxy group); X is a fluorine, chlorine or bromine atom or a group -OR<3> or -O @R<3>, (in which R<3> is a straight or branched C1-C10 alkyl group or a hydrogen atom); and * indicates an asymmetric carbon atom. o