Alpha-aryloxypropionic acid esters.

摘要

Optical active compound, particularly useful as components of ferroelectric liquid crystal compositions, have the formula: <CHEM> in which R<1> is a straight or branched alkyl or alkoxy group containing up to 18 carbon atoms, R<2> is a straight or branched alkyl group containing up to 12 carbon atoms, -A- is a group <CHEM> (wherein X is a fluorine or chlorine atom or a cyano group and * indicates an asymmetric carbon atom.