Fluorinated azoles, and their use in liquid-crystalline mixtures
    9.
    发明授权
    Fluorinated azoles, and their use in liquid-crystalline mixtures 失效
    氟化唑类及其在液晶混合物中的应用

    公开(公告)号:US06231786B1

    公开(公告)日:2001-05-15

    申请号:US09484680

    申请日:2000-01-18

    IPC分类号: C09K1934

    摘要: In the fluorinated azoles of the formula (I) R1(—A1)a—T—(A2—)b(M—A3—)cR2   (I) the symbols and indices have -the following meanings: T is undirected and is 4-fluorothiazole-2,5-diyl, 5-fluorothiazole-2,4-diyl, 4-fluorooxazole-2,5-diyl, 5-fluorooxazole-2,4-diyl or 4-fluoroisoxazole-2,5-diyl; R1 and R2 are identical or different and are hydrogen or a straight-chain or branched C1-20-alkyl or C2-20-alkenyl radical (with or without asymmetrical carbon atoms); A1, A2 and A3 are identical or different and are, for example, phenylene-1,4-diyl or cyclohexane-1,4-diyl; M is undirected and is —OC(═O)—, —OCH2—, —CH2CH2—, —OC(═O)CH2CH2—, —OCH2CH2CH2—, —C≡C—, —CH2CH2CH2CH2— or a single bond; a, b and c, independently of one another, are 0 or 1, with the proviso that the sum a+b+c is 1 or 2.

    摘要翻译: 在式(I)的氟化唑中,符号和指标具有以下含义:T是无定向的,4-氟噻唑-2,5-二基,5-氟噻唑-2,4-二基,4-氟恶唑-2, 5-二氟基-5-氟恶唑-2,4-二基或4-氟异恶唑-2,5-二基; R 1和R 2相同或不同,为氢或直链或支链C 1-20 - 烷基或C 2-20 - 烯基(具有或不具有不对称碳原子); A1,A2和A3相同或不同,为例如亚苯基-1,4-二基或环己烷-1,4-二基; M为无取代基且为-OC( = O) - , - OCH 2 - , - CH 2 CH 2 - , - OC(= O)CH 2 CH 2 - , - OCH 2 CH 2 CH 2 - , - C≡C-, - CH 2 CH 2 CH 2 CH 2 - 或单键; a,b和c彼此独立地 ,为0或1,条件是a + b + c之和为1或2。

    Difluorophenyl pyrimidyl pyridine derivatives and the use thereof in
liquid crystal mixtures
    10.
    发明授权
    Difluorophenyl pyrimidyl pyridine derivatives and the use thereof in liquid crystal mixtures 失效
    二氟苯基嘧啶基吡啶衍生物及其在液晶混合物中的应用

    公开(公告)号:US6022492A

    公开(公告)日:2000-02-08

    申请号:US91404

    申请日:1999-01-14

    摘要: Difluorophenylpyrimidylpyridine derivatives of the formula (I) ##STR1## wherein X is N and Y is CH or X is CH and Y is N;R.sup.1 and R.sup.2 are identical or different and area) an unbranched or branched alkyl chain having 1 to 20 carbon atoms, whereaa) one or more non-adjacent and non-terminal CH.sub.2 groups may be replaced by --O--, --CO--O--, --O--CO--, --O--CO--O-- or --Si(CH.sub.3).sub.2 --, and/orab) one or more H atoms may be replaced by F, and/orac) the terminal CH.sub.3 group may be replaced by one of the following chiral groups (optically active or racemic): ##STR2## R.sup.3, R.sup.4 and R.sup.5 are identical or different and are hydrogen or a straight-chain or branched alkyl radical having 1-16 carbon atoms (with or without an asymmetrical carbon atom), where, in addition, one or more non-adjacent non-terminal CH.sub.2 groups may be replaced by --O--, and/or where one or more H atoms of the alkyl radical may be substituted by --F; R.sup.4 and R.sup.5 may alternatively together be --(CH.sub.2).sub.4 -- or --(CH.sub.2).sub.5 -- if they are bonded to a dioxolane system,are suitable as components, in particular, of ferroelectric liquid-crystal mixtures.

    摘要翻译: PCT No.PCT / EP96 / 05774 Sec。 371日期1999年1月14日第 102(e)日期1999年1月14日PCT 1996年12月20日PCT公布。 第WO97 / 24351号公报 日期:1997年7月10日,式(I)的二氟苯基嘧啶基吡啶衍生物,其中X为N,Y为CH或X为CH,Y为N; R1和R2相同或不同,并且a)具有1至20个碳原子的无支链或支链烷基链,其中aa)一个或多个非相邻和非末端的CH 2基团可以被-O - , - CO- O-,-O-CO-,-O-CO-O-或-Si(CH 3)2 - 和/或ab)一个或多个H原子可以被F替代,和/或ac) 可以被以下手性基团(光学活性或外消旋)之一代替:R3,R4和R5相同或不同,是氢或具有1-16个碳原子的直链或支链烷基(具有或不具有不对称的 碳原子),此外,一个或多个非相邻的非末端CH 2基团可被-O-取代,和/或烷基的一个或多个H原子可被-F取代; R4和R5可以一起为 - (CH 2)4 - 或 - (CH 2)5 - 如果它们与二氧杂环戊烷体系结合,则适合作为组分,特别是铁电液晶混合物。