OPTICALLY ACTIVE 2-BIPHENYL PYRIMIDINE DERIVATIVES AND LIQID ORYSTAL COMPOSITIONS

摘要

Optically active 2-biphenylpyridine derivs. of formula (I) are prepd. In (I), one of R1 and R2 is C1-20 alkyl or alkoxy gp.; the other is optically active gp. Optically active gp. is pref. C5-12 halogenated alkyl or alkoxy, C5-12 alkanoyloxy, C4-14 alkoxyalkanoyloxy or C4-14 alkanoyloxyalkoxy. (I) are useful as a ferroelectric liquid crystal compsn. in the display mode.