Chiral, nonracemic compounds of the general formula: ##STR1## wherein n=1 or 2, Y is a hydrogen, fluorine, chlorine or bromine atom, R' is an alkyl or alkoxy group having three to fifteen carbons, and R is an alkyl group having three to fifteen carbons, which are useful as ferroelectric liquid crystal components having high polarization are described. Also described are compounds of the same general formula in which X is OH, which are useful as synthetic intermediates in the preparation of the FLC components of the present invention.
本发明涉及一种手性的、非外消旋的化合物,其一般式为:##STR1## 其中n为1或2,Y为氢、
氟、
氯或
溴原子,R'为具有3至15个碳的烷基或烷氧基,R为具有3至15个碳的烷基,这些化合物可用作具有高极化度的
铁电液晶组分。本发明还涉及一般式中X为OH的化合物,它们可用作制备本发明的FLC组分的合成中间体。