Thiadiazole derivatives, process for their preparation, and their use as
precursors for the production of liquid crystals
    1.
    发明授权
    Thiadiazole derivatives, process for their preparation, and their use as precursors for the production of liquid crystals 失效
    噻二唑衍生物,其制备方法及其作为液晶生产的前体的用途

    公开(公告)号:US5847149A

    公开(公告)日:1998-12-08

    申请号:US680898

    申请日:1996-07-16

    摘要: Thiadiazole derivatives of the formula (I) X-B-A.sup.1 -(M.sup.1 -A.sup.2 -).sub.m (M.sup.2 -A.sup.3).sub.n -R.sup.1(I) in which the symbols and indices have the following meanings: X is Cl, Br or I; B is 1,3,4-thiadiazole-2,5-diyl; A.sup.1, A.sup.2 and A.sup.3 are identical or different and are substituted or unsubstituted 1,4-phenylene, pyrazine-2,5-diyl, pyridazine-3,6-diyl, pyridine-2,5-diyl, pyrimidine-2,5-diyl, trans-1,4-cyclohexylene, 1,3,4-thiadiazole-2,5-diyl, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl, 1,3-thiazole-2,4-diyl, 1,3-thiazole-2,5-diyl, thiophene-2,4-diyl, thiophene-2,5-diyl, piperazine-1,4-diyl, piperazine-2,5-diyl, naphthalene-2,6-diyl, bicyclo�2.2.2!octane-1,4-diyl, or 1,3-dioxaborinane-2,5-diyl; M.sup.1 and M.sup.2 are identical or different and are --CO--O--, --O--CO--, --O--CO--O--, --O--CS--O--, --CH.sub.2 --O--, --O--CH.sub.2 --, --CH.dbd.CH--, --C.tbd.C-- or a single bond; R.sup.1 is --O-benzyl, H, an alkyl group having 1 to 12 carbon atoms or an alkoxy group having 1 to 12 carbon atoms; m and n are 0 or 1. The novel compounds allow the synthesis of a wide range of 1,3,4-thiadiazole derivatives, as employed, for example, as components of liquid-crystal mixtures, in a significantly reduced number of synthesis steps.

    摘要翻译: 式(I)X-B-A1-(M1-A2-)m(M2-A3)n -R1(I)的噻二唑衍生物,其中符号和指数具有以下含义:X为Cl,Br或I; B是1,3,4-噻二唑-2,5-二基; A1,A2和A3相同或不同,为取代或未取代的1,4-亚苯基,吡嗪-2,5-二基,哒嗪-3,6-二基,吡啶-2,5-二基,嘧啶-2,5-二基, 二,反-1,4-亚环己基,1,3,4-噻二唑-2,5-二基,1,3-二恶烷-2,5-二基,1,3-二噻烷-2,5-二基, 3-噻唑-2,4-二基,1,3-噻唑-2,5-二基,噻吩-2,4-二基,噻吩-2,5-二基,哌嗪-1,4-二基,哌嗪-2, 双环[2.2.2]辛烷-1,4-二基或1,3-二氧杂硼杂环壬烷-2,5-二基; M 1和M 2相同或不同,为-CO-O-,-O-CO-,-O-CO-O-,-O-CS-O-,-CH2-O-,-O-CH2-, CH = CH-,-C 3BOND C-或单键; R 1为-O-苄基,H为碳原子数1〜12的烷基或碳原子数1〜12的烷氧基。 m和n为0或1.新化合物允许合成宽范围的1,3,4-噻二唑衍生物,例如作为液晶混合物的组分,以显着减少数量的合成步骤 。

    1,8-Difluorisoquinoline derivatives and the use thereof in liquid
crystalline mixtures
    7.
    发明授权
    1,8-Difluorisoquinoline derivatives and the use thereof in liquid crystalline mixtures 失效
    1,8-二氟异喹啉衍生物及其在液晶混合物中的应用

    公开(公告)号:US5882546A

    公开(公告)日:1999-03-16

    申请号:US930106

    申请日:1997-11-06

    摘要: 1,8-Difluoroisoquinoline derivatives of the formula (I)R.sup.1 (--M.sup.1).sub.a (--A.sup.1 --M.sup.2).sub.b (--A.sup.2 --M.sup.3).sub.c --B(--M.sup.4 --A.sup.3).sub.d (--M.sup.5 --A.sup.4).sub.e (--M.sup.6).sub.f --R.sup.2 (I)in which the symbols and indices have the following meanings: the group B is ##STR1## R.sup.1 and R.sup.2 are, for example, alkyl radicals having 1 to 20 carbon atoms;M.sup.1, M.sup.2, M.sup.3, M.sup.4, M.sup.5 and M.sup.6 are, for example, --O--, --CO--O--, --O--CO-- or a single bond;A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are, for example, 1,4-phenylene, pyrimidine-2,5-diyl or trans-1,4-cyclohexylene, anda, b, c, d, e and f are zero or one, with the proviso that the sum of b, c, d and e is 0, 1 or 2.The compounds of the formula (I) are colorless in the pure state and generally form liquid-crystalline mesophases in a temperature range which is favorably located for electro-optical use. They are stable chemically, thermally and to light.

    摘要翻译: PCT No.PCT / EP96 / 01996 371日期:1997年11月6日 102(e)日期1997年11月6日PCT提交1996年5月10日PCT公布。 公开号WO96 / 35676 日期:1961年11月14日8-式(I)的二氟异喹啉衍生物R1(-M1)a(-A1-M2)b(-A2-M3)cB(-M4-A3)d(-M5-A4) e(-M6)f-R2(I)其中符号和指数具有以下含义:组B为R 1和R 2为例如具有1至20个碳原子的烷基; M1,M2,M3,M4,M5和M6是例如-O - , - CO-O-,-O-CO-或单键; A1,A2,A3和A4是例如1,4-亚苯基,嘧啶-2,5-二基或反-1,4-亚环己基,a,b,c,d,e和f分别为零或一个 ,条件是b,c,d和e的和为0,1或2.式(I)的化合物在纯状态下是无色的,并且通常在有利的温度范围内形成液晶中间相 位于电光学使用。 它们在化学,热和光下都是稳定的。

    1-fluor-5,6,7,8-tetrahydroisoquinoline derivatives, and their use in
liquid-crystal line mixtures
    8.
    发明授权
    1-fluor-5,6,7,8-tetrahydroisoquinoline derivatives, and their use in liquid-crystal line mixtures 失效
    1-氟-5,6,7,8-四氢异喹啉衍生物及其在液晶线混合物中的应用

    公开(公告)号:US5942618A

    公开(公告)日:1999-08-24

    申请号:US952125

    申请日:1997-11-06

    摘要: 1-Fluoro-5,6,7,8-tetrahydroisoquinoline derivatives, and their use in liquid-crystalline mixtures1-Fluoro-5,6,7,8-tetrahydroisoquinoline derivatives of the formula (I)R.sup.1 ( --M.sup.1).sub.a (--A.sup.1 --M.sup.2).sub.b (--A.sup.2 --M.sup.3).sub.c --B(--M.sup.4 --A.sup.3).sub.d (--M.sup.5 --A.sup.4).sub.e (--M.sup.6 .sub.f --R.sup.2 (I)in which the symbols and indices have the following meanings:the group B is ##STR1## R.sup.1 and R.sup.2 are, for example, alkyl radicals having 1 to 20 carbon atoms;M.sup.1, M.sup.2, M.sup.3, M.sup.4, M.sup.5 and M.sup.6 are, for example, --O--, --CO--O--, --O--CO-- or a single bond;A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are, for example, 1,4-phenylene, pyrimidine-2,5-diyl or trans-1,4-cyclohexylene, anda, b, c, d, e and f are zero or one, with the proviso that the sum of b, c, d and e is 0, 1 or 2.The compounds of the formula (I) are colorless in the pure state and generally form liquid-crystalline mesophases in a temperature range which is favorably located for electro-optical use. They are stable chemically, thermally and to light.

    摘要翻译: PCT No.PCT / EP96 / 01995 371日期:1997年11月6日 102(e)日期1997年11月6日PCT提交1996年5月10日PCT公布。 出版物WO96 / 35675 日期:1961年11月14日 - 氟-5,6,7,8-四氢异喹啉衍生物及其在液晶混合物中的用途式(I)的1-氟-5,6,7,8-四氢异喹啉衍生物R1( -M1)a(-A1-M2)b(-A2-M3)cB(-M4-A3)d(-M5-A4)e(-M6f-R2(I)其中符号和指数具有以下含义 基团B为R 1,R 2为例如具有1〜20个碳原子的烷基; M 1,M 2,M 3,M 4,M 5,M 6为例如-O - , - CO-O - , - O -CO-或单键; A1,A2,A3和A4是例如1,4-亚苯基,嘧啶-2,5-二基或反式-1,4-亚环己基,和a,b,c,d ,e和f为零或一个,条件是b,c,d和e的和为0,1或2.式(I)化合物在纯状态下为无色,通常形成液晶 中等相位在有利于电光学使用的温度范围内,它们化学稳定,耐热和耐光稳定。