Fluorine-containing pyrimidine derivatives
    1.
    发明授权
    Fluorine-containing pyrimidine derivatives 失效
    含氟嘧啶衍生物

    公开(公告)号:US4812258A

    公开(公告)日:1989-03-14

    申请号:US35820

    申请日:1987-04-08

    摘要: Liquid crystalline fluorine-containing pyrimidine compounds have the formula I ##STR1## wherein R.sup.1 and R.sup.2 are H, R, OR or OCOR, and one of them can also be CN or F, or, if A is a covalent bond, also one or both of R.sup.1 and R.sup.2 can be 4-R.sup.4 -phenyl or 4-R-cyclohexyl, wherein R.sup.4 is R, OR, cyano, f or OCOR; wherein R is an alkyl group of 1 to 12 C atoms; R.sup.3 is F or, if one of the radicals R.sup.1 or R.sup.2 is F or 4-fluorophenyl, also H; Z is 1,3-pyrimidin-2,5-diyl; and A is 1,4-phenylene, 1,4-cyclohexylene or a covalent bond.Fluorine-containing pyrimidine compounds are useful components of liquid crystal dielectrics for electro-optical display devices.

    摘要翻译: 液晶含氟嘧啶化合物具有式I的化合物,其中R 1和R 2是H,R,OR或OCOR,它们之一也可以是CN或F,或者如果A是共价键,也可以是一个或 R 1和R 2可以是4-R 4 - 苯基或4-R-环己基,其中R 4是R,OR,氰基,F或OCOR; 其中R是1至12个C原子的烷基; R 3为F,或者如果基团R 1或R 2中的一个为F或4-氟苯基,则为H; Z是1,3-嘧啶-2,5-二基; A是1,4-亚苯基,1,4-亚环己基或共价键。 含氟嘧啶化合物是用于电光显示装置的液晶电介质的有用组分。

    Thienothiophene derivatives
    2.
    发明授权
    Thienothiophene derivatives 失效
    噻吩并噻吩衍生物

    公开(公告)号:US4639328A

    公开(公告)日:1987-01-27

    申请号:US674891

    申请日:1984-11-26

    CPC分类号: C07D495/04 C09K19/3491

    摘要: Thienothiophene derivatives of the formula IR.sup.1 --(A.sup.1).sub.m --Z.sup.1 --A--(Z.sup.2 --A.sup.2).sub.n --R.sup.2 Iin which R.sup.1 and R.sup.2 are each H or an alkyl group having 1-12 C atoms, in which, furthermore, one or two non-adjacent CH.sub.2 groups can be replaced by O atoms, --CO-- or --CH.dbd.CH-- groups, or are each F, Cl, Br, CN, --COOR or --O--COR, A.sup.1 and A.sup.2 are each 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl, tetrahydropyran-2,5-diyl, pyridazine-3,6-diyl or the corresponding N-oxide, piperidine-1,4-diyl, 1,4-bicyclo[2.2.2]octylene or pyrimidine-2,5-diyl groups which are unsubstituted or substituted by one or two F, Cl or Br atoms and/or CN groups and/or CH.sub.3 groups, A is a group of the formula 1 or 2 ##STR1## which is unsubstituted or substituted by one or two Cl and/or Br atoms, Z.sup.1 and Z.sup.2 are each --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O-- or a single bond, R is an alkyl group having 1-10 C atoms, m is 1 or 2 and n is 0 or 1, and where m is 2, the two groups A.sup.1 can be identical or different, can be used as components of liquid crystalline phases.

    摘要翻译: 式I R1-(A1)m-Z1-A-(Z2-A2)n-R2 I的噻吩并噻吩衍生物,其中R 1和R 2各自为H或具有1-12个C原子的烷基,此外, 一个或两个不相邻的CH2基团可以被O原子,-CO-或-CH = CH-基团取代,或者各自为F,Cl,Br,CN,-COOR或-O-COR,A1和A2分别为 1,4-亚苯基,1,4-亚环己基,1,3-二恶烷-2,5-二基,1,3-二噻烷-2,5-二基,四氢吡喃-2,5-二基,哒嗪-3,6-二基, 二基或相应的未被取代或被一个或两个F,Cl或Br取代的N-氧化物,哌啶-1,4-二基,1,4-二环[2.2.2]辛烯或嘧啶-2,5-二基 原子和/或CN基团和/或CH 3基团,A是未被取代或被一个或两个Cl和/或Br原子取代的式1或2的基团,Z 1和Z 2各自为-CO-O - , - O - CO - , - CH 2 CH 2 - , - OCH 2 + 13,-CH 2 O-或单键,R是具有1-10个C原子的烷基,m是1或2,n是0或1, 其中m为2,两组A1可以相同或不同,可用于a 液晶相的成分。