Pyridylthiophenes
    94.
    发明授权
    Pyridylthiophenes 失效
    吡啶基噻吩

    公开(公告)号:US4659503A

    公开(公告)日:1987-04-21

    申请号:US685083

    申请日:1984-12-21

    摘要: Liquid crystal compounds containing the structural constituent --Py--Th--, wherein Py is a pyridine-2,5-diyl ring and Th is a thiophene-2,4- or -2,5-diyl ring, and in particular pyridylthiophenes of the formula IR.sup.1 --(A.sup.1 --Z.sup.1).sub.m --(A.sup.2 --Z.sup.2).sub.n --Py--Th--(Z.sup.3 --A.sup.3).sub.p --R.sup.2 Iwherein Py and Th have the meanings given, R.sup.1 and R.sup.2 are each an alkyl group with 1-15 C atoms, in which one or two CH.sub.2 groups can also be replaced by O atoms; F, Cl, Br, CN or --O--COR, and one of these radicals can also be H, A.sup.1, A.sup.2 and A.sup.3 are each 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, piperidine-1,4-diyl, 1,4-bicyclo-(2,2,2)-octylene or pyrimidine-2,5-diyl groups which are unsubstituted or substituted by 1-4 F atoms, it being possible for the cyclohexylene group(s) to be substituted in the 1- and/or 4-position by alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy with in each case 1-5 C atoms, F, Cl, Br and/or CN, Z.sup.1, Z.sup.2 and Z.sup.3 are each --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O-- or a single bond, (m+n+p) is 0, 1 or 2 and R is an alkyl group with 1-5 C atoms, and the acid addition salts of the basic compounds of this type, are suitable as constituents of liquid crystal phases.

    摘要翻译: 含有结构成分-Py-Th-的液晶化合物,其中Py是吡啶-2,5-二基环,Th是噻吩-2,4-或-2,5-二基环,特别是吡啶基-2,5-二基环的吡啶基噻吩 式(Ⅰ-R1)m-(A2-Z2)n-Py-Th-(Z3-A3)p-R2 I其中Py和Th具有给定的含义,R 1和R 2各自为烷基, -15个C原子,其中一个或两个CH 2基团也可以被O原子取代; F,Cl,Br,CN或-O-COR,这些基团之一也可以是H,A1,A2和A3各自为1,4-亚苯基,1,4-亚环己基,1,3-二恶烷-2, 未被取代或被1-4个F原子取代的5-二基,哌啶-1,4-二基,1,4-二环 - (2,2,2) - 亚辛基或嘧啶-2,5-二基, 可以通过烷基,烷氧基,氟化烷基或氟化烷氧基在1-和/或4-位取代亚环己基,在各种情况下为1-5 C原子,F,Cl,Br和/或CN ,Z 1,Z 2和Z 3各自为-CO-O-,-O-CO-,-CH 2 CH 2 - , - OCH 2 - , - CH 2 O-或单键,(m + n + p)为0,1或2, R是具有1-5个C原子的烷基,这种碱性化合物的酸加成盐适合作为液晶相的成分。