Optically active compounds, and a liquid-crystalline phase
    7.
    发明授权
    Optically active compounds, and a liquid-crystalline phase 失效
    光学活性化合物和液晶相

    公开(公告)号:US5393459A

    公开(公告)日:1995-02-28

    申请号:US956938

    申请日:1992-10-05

    摘要: The invention relates to optically active compounds of the formula I ##STR1## in which R is an alkyl or alkenyl radical having up to 15 carbon atoms which is unsubstituted, monosubstituted by --CN or at least monosubstituted by fluorine or chlorine, it also being possible for a CH.sub.2 group in these radicals to be replaced by --O--, --CO--, --O--CO--, --CO--O-- or --O--CO--O--,A.sup.1 and A.sup.2 are each, independently of one another, a 1,4-phenylene radical, pyridine-2,5-diyl radical, pyrimidine-2,5-diyl radical, pyrazine-2,5-diyl radical, pyridazine-3,6-diyl radical, 1,3,4-thiadiazole-2,5-diyl radical, 1,2,4-thiadiazole-3,5-diyl radical or trans-1,4-cyclohexylene radical, each of which is unsubstituted or substituted by one or two fluorine atoms, and in which, in addition, one or two non-adjacent CH.sub.2 groups may be replaced by --O-- and/or --S--, and/or a CH group,Z.sup.1, Z.sup.2 and Z.sup.3 are each, independently of one another, --CO--O--, --O--CO--, --CH.sub.2 O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CH.dbd.CH--, --C.tbd.C-- or a single bond,Q.sup.1 is --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 OCH.sub.2 --, --OCH.sub.2 CH.sub.2 --, --O--CO-- or --CO--OCH.sub.2 --,Q.sup.2 is --O--, --O--CO--, --(CH.sub.2).sub.3 --)-- or a single bond,m is 0, 1, 2 or 3,n is 0 or 1, ando is 1 to 9, and the use thereof as components of liquid-crystalline phases.

    摘要翻译: 本发明涉及式I的旋光活性化合物,其中R是具有至多15个碳原子的烷基或烯基,其未被取代,被-CN单取代或至少被氟或氯单取代,也可能是 对于这些基团中的CH 2基团被-O-,-CO-,-O-CO-,-CO-O-或-O-CO-O-,A1和A2各自彼此独立地取代, 吡啶-2,5-二基,嘧啶-2,5-二基,吡嗪-2,5-二基,哒嗪-3,6-二基,1,3,4-三基, 噻二唑-2,5-二基,1,2,4-噻二唑-3,5-二基或反-1,4-亚环己基,其各自为未取代的或被一个或两个氟原子取代,其中 另外,一个或两个不相邻的CH 2基团可以被-O-和/或-S-代替,和/或CH基,Z 1,Z 2和Z 3彼此独立地是-CO-O - , - O - CO - , - CH 2 O - , - OCH 2 - , - CH 2 CH 2 - , - CH = CH - , - C 3BOND C-或单键,Q 1是-CH 2 CH 2 - CH 2 CH 2 CH 2 - , - OCH 2 - , - CH 2 OCH 2 - , - OCH 2 CH 2 - , - O-CO-或-CO-OCH 2 - ,Q 2是-O - , - O - CO - , - (CH 2)3 - ) - 键,m为0,1,2或3,n为0或1,o为1至9,并且其用作液晶相的组分。