申请人:Merck Patent Gesellschaft mit Beschrankter Haftung
公开号:US04871472A1
公开(公告)日:1989-10-03
Compounds of the formula I ##STR1## wherein R.sup.1 and R.sup.2 each independently of one another are R, OR, OCOR, COOR or OCOOR, is alkyl with 1 to 15 C atoms, wherein one or more CH.sub.2 groups which are not adjacent and are not linked by O can also be replaced by --O--, --CO--, --O--CO--, --CO--O--, --CH--halogen, --CHCN-- and/or --CH.dbd.CH--, A.sup.1, A.sup.2 and A.sup.3 each independently of one another are 1,4-phenylene or trans-1,4-cyclohexylene, m, n and o are each 0 or 1, m+n+o is 0, 1 or 2, Z.sup.1 and Z.sup.2 each independently of one another are --CH.sub.2 --O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2 -- or a single bond and X is F, Cl, Br, I or CN, with the provisos given in claim 1, can be used as components of ferroelectric liquid crystal phases.
公式I的化合物如下:其中R.sup.1和R.sup.2各自独立地是R、OR、OCOR、COOR或OCOOR,是具有1至15个C原子的烷基,其中一个或多个不相邻且未被O连接的CH.sub.2基团也可以被替换为--O--、--CO--、--O--CO--、--CO--O--、--CH--卤素、--CHCN--和/或--CH.dbd.CH--,A.sup.1、A.sup.2和A.sup.3各自独立地是1,4-苯撑基或反-1,4-环己撑基,m、n和o各自为0或1,m+n+o为0、1或2,Z.sup.1和Z.sup.2各自独立地是--CH.sub.2--O--、--OCH.sub.2--、--CH.sub.2CH.sub.2--或单键,X为F、Cl、Br、I或CN,具有权利要求1所述的规定,可用作铁电液晶相的组分。