Cyanophenylpyri (MI)dine derivatives and liquid-crystalline medium
    2.
    发明授权
    Cyanophenylpyri (MI)dine derivatives and liquid-crystalline medium 失效
    氰基苯基(MI)餐饮衍生物和液晶介质

    公开(公告)号:US5454975A

    公开(公告)日:1995-10-03

    申请号:US220991

    申请日:1994-04-01

    摘要: Cyanopyrimidine derivatives of formula I ##STR1## in which R.sup.1 is an unsubstituted or at least mono-halogen-substituted alkyl or alkoxy radical having 1 to 15 carbon atoms, where one or more CH.sub.2 groups in these radicals may also, in each case independently of one another, be replaced by --CH.dbd.CH--, --O--, --S--, ##STR2## --CO--, --CO--O--, --O--CO-- or --O--CO--O-- in such a way that oxygen atoms are not linked directly to one another,X.sup.1, Y.sup.1 and Z.sup.1 are each, independently of one another, N or CF,X.sup.2, Y.sup.2 and Z.sup.2 are each, independently of one another, N, CF or CH, andn is 0, 1 or 2,with the proviso that at least one of the groups X.sup.1, Y.sup.1 and Z.sup.1 is N,can be used as components of liquid-crystalline media for electro-optical displays.

    摘要翻译: 式I的吡咯并嘧啶衍生物,其中R 1是未取代的或至少单卤素取代的具有1至15个碳原子的烷基或烷氧基,其中这些基团中的一个或多个CH 2基团也可以独立地 彼此之间被-CH = CH - , - O - ,-S - , - IMA,-CO-,-CO-O-,-O-CO-或-O-CO- 氧原子彼此不直接相连的方式,X1,Y1和Z1各自独立地为N或CF,X2,Y2和Z2各自独立地为N,CF或CH,n为 是0,1或2,条件是基团X1,Y1和Z1中的至少一个是N,可以用作电光显示器的液晶介质的组分。