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    Liquid crystal compounds and indicating device employing same
    3.
    发明授权
    Liquid crystal compounds and indicating device employing same 失效
    液晶化合物和使用其的指示装置

    公开(公告)号：US5013476A

    公开(公告)日：1991-05-07

    申请号：US121712

    申请日：1987-11-17

    Applicant: Arthur Boller ,  Richard Buchecker ,  Hans-Jurgen Fromm ,  Stephen Kelly ,  Martin Schadt ,  Alois Villiger

    Inventor： Arthur Boller ,  Richard Buchecker ,  Hans-Jurgen Fromm ,  Stephen Kelly ,  Martin Schadt ,  Alois Villiger

    IPC: G02F1/137 ,  C07C15/50 ,  C07C43/166 ,  C07C43/215 ,  C07C67/00 ,  C07C69/773 ,  C07C69/88 ,  C07C69/90 ,  C07C69/92 ,  C07C69/94 ,  C07C253/00 ,  C07C255/57 ,  C07D239/26 ,  C07D241/12 ,  C07D319/06 ,  C09K19/12 ,  C09K19/14 ,  C09K19/20 ,  C09K19/34 ,  C09K19/42 ,  C09K19/44 ,  C09K19/46 ,  G02F1/13 ,  G02F1/141

    CPC classification number: C09K19/3458 ,  C09K19/2007 ,  C09K19/2021 ,  C09K19/3402 ,  C09K19/3452 ,  C09K19/42 ,  C09K2019/3422

    Abstract: A ferroelectric liquid crystal mixture containing at least one compound of the formula ##STR1## wherein n stands for the number 0 or 1; X.sup.1 represents a single covalent bond, --COO-- or --OOC-- and X.sup.2 represents a single covalent bond, --COO--, --OOC--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 -- or --CH.sub.2 O--; rings A.sup.1, A.sup.2 and A.sup.3 each independently signify 1,4-phenylene optionally substituted with cyano, halogen or lower alkyl or pyrimidin-2,5-diyl, pyrazin-2,5-diyl, when n is 1, trans-1,4-cyclohexylene or trans-m-dioxan-2,5-diyl; with the proviso that one of the rings present stands for pyrimidin-2,5-diyl or pyrazin-2,5-diyl when a further ring signifies trans-1,4-cyclohexylene or when n stands for the number 0 and X.sup.1 stands for a single covalent bond; and R.sup.1 signifies an optionally halogen-substituted alkenyl group with up to 18 carbon atoms in which optionally 1 or 2 non-adjacent CH.sub.2 groups are replaced by --O-- and/or a C.dbd.C double bond; with the proviso that R.sup.1 is different from 3,7-dimethyl-6-octenyloxy; R.sup.2 signifies an optionally halogen-substituted alkyl group with up to 18 carbon atoms in which optionally 1 or 2 non-adjacent CH.sub.2 groups are replaced by --O-- and/or a C.dbd.C double bond; with the proviso that residues R.sup.1 and/or R.sup.2 attached to an aromatic ring have at least 2 chain atoms between the aromatic ring and a C.dbd.C double bond present;as well as novel compounds falling under formula I and novel ferroelectric liquid crystal devices employing the compounds according to the invention.

    Abstract translation: 含有至少一种下式化合物的铁电液晶混合物，其中n代表数字0或1; X1表示单个共价键，-COO-或-OOC-，X2表示单个共价键，-COO - ， - OOC - ， - CH 2 CH 2 - ， - OCH 2 - 或-CH 2 O-。 环A1，A2和A3各自独立地表示任选被氰基，卤素或低级烷基或嘧啶-2,5-二基，吡嗪-2,5-二基取代的1,4-亚苯基，当n为1时，反式-1,4 环己基或反式间二恶烷-2,5-二基; 条件是存在的一个环表示嘧啶-2,5-二基或吡嗪-2,5-二基，当另一个环表示反式-1,4-亚环己基或当n表示0时，X 1表示 单一共价键; 并且R 1表示任选具有至多18个碳原子的卤素取代的烯基，其中任选地1或2个不相邻的CH 2基团被-O-和/或C = C双键替代; 条件是R1不同于3,7-二甲基-6-辛烯氧基; R2表示任选具有至多18个碳原子的卤素取代的烷基，其中任选地1或2个不相邻的CH 2基团被-O-和/或C = C双键替代; 条件是连接到芳族环上的残基R1和/或R2在芳族环和存在的C = C双键之间具有至少2个链原子; 以及下式I中的新化合物和使用本发明化合物的新型铁电液晶装置。

    Diethynylated diphenyl hexafluoropropanes
    5.
    发明授权
    Diethynylated diphenyl hexafluoropropanes 失效
    二乙氧基二苯基六氟丙烷

    公开(公告)号：US4814472A

    公开(公告)日：1989-03-21

    申请号：US466271

    申请日：1985-02-14

    Applicant: Kreisler S. Y. Lau

    Inventor： Kreisler S. Y. Lau

    IPC: C07C1/32 ,  C07C15/50 ,  C07C17/093 ,  C07F7/08

    CPC classification number: C07F7/0809 ,  C07C1/321 ,  C07C15/50 ,  C07C17/093

    Abstract: There are disclosed diethynylated diphenyl hexafluoropropane compounds, which are suitable for forming copolymers and carbon-carbon composites. These compounds are prepared in high yields by first providing a dihalogenated diphenyl hexafluoropropane compound, coupling the dihalogenated compound with ethynyltrimethylsilane in the presence of an organometallic catalyst to form a silylated ethynyl terminated diphenyl substituted compound and subsequently desilylating the compound to form the desired diethynylated diphenyl hexafluoropropane compound.

    Abstract translation: 公开了二异戊基化二苯基六氟丙烷化合物，其适于形成共聚物和碳 - 碳复合材料。 通过首先提供二卤代二苯基六氟丙烷化合物，在有机金属催化剂的存在下将二卤代化合物与乙炔基三甲基硅烷偶联以形成甲硅烷基化的乙炔基封端的二苯基取代的化合物，随后使该化合物脱甲硅烷化以形成所需的二异丙基二苯基六氟丙烷 复合。

    Method of producing ethynyl aromatic compounds
    7.
    发明授权
    Method of producing ethynyl aromatic compounds 失效
    制备乙炔基芳族化合物的方法

    公开(公告)号：US4665246A

    公开(公告)日：1987-05-12

    申请号：US588087

    申请日：1984-03-09

    Applicant: Chris Anderson

    Inventor： Chris Anderson

    IPC: C07C15/48 ,  C07C15/50 ,  C07C33/46 ,  C07C45/46 ,  C07C49/80 ,  C07C49/813 ,  C07C13/00 ,  C07C1/253 ,  C07C1/26 ,  C07C1/30 ,  C07C15/00 ,  C07C15/12

    CPC classification number: C07C49/80 ,  C07C15/48 ,  C07C15/50 ,  C07C33/46 ,  C07C45/46 ,  C07C49/813

    Abstract: The process of producing ethynyl aromatic compounds which are useful as intermediates in the preparation of 3-dimensional carbon-carbon structures for aerospace and military applications and as starting materials in the preparation of organic semi-conductors. The ethynyl aromatic compounds may be any of the classes illustrated in FIGS. 1, 2 and 3 of the drawing. Starting compounds for the process may by any compound from the classes illustrated in FIGS. 4, 5 and 6. The starting compound is reacted in the presence of a Friedel-Crafts catalyst in a suitable solvent with an acyl compound from the class illustrated in FIG. 7 to yield a compound within the classes illustrated in FIGS. 8, 9 and 10. The carbonyl groups in this compound are reduced to yield a corresponding alcohol. Each hydroxy group in the alcohol is converted to an easily eliminatable group, e.g., by reacting it with methane sulfonyl chloride, when subjected to basic conditions. The chlorine and the easily eliminatable groups are then eliminated under basic conditions to yield the desired ethynyl aromatic compound.Illustrative examples of products produced by the process of the invention include 4-4'-diethynyldiphenyl methane; 1,2-(4,4'-diethynyldiphenyl) ethane; 1,1-(4,4'-diethynyldiphenyl) ethane; tris(4-ethynyl phenyl) methane; 4-ethynyl toluene; 2,2'-(4,4'-diethynyldiphenyl) propane; and 4-ethynyl biphenyl.

    Abstract translation: 制造乙炔芳族化合物的方法，其可用作制备用于航空航天和军事应用的三维碳 - 碳结构的中间体，并且作为制备有机半导体的起始材料。 乙炔基芳族化合物可以是图1和图2所示的任何一种。 图1,2和3。 用于该方法的起始化合物可以由图1至图6所示的任何化合物进行。 在Friedel-Crafts催化剂存在下，在合适的溶剂中使起始化合物与图1所示的酰基化合物反应。 以产生图1和图2所示的类别的化合物。 8,9和10.将该化合物中的羰基还原，得到相应的醇。 当经受基本条件时，醇中的每个羟基被转化成易消除的基团，例如通过使其与甲磺酰氯反应。 然后在碱性条件下除去氯和易消除的基团，得到所需的乙炔基芳族化合物。 通过本发明方法生产的产品的说明性实例包括4-4'-二乙炔基二苯基甲烷; 1,2-（4,4'-二乙炔基二苯基）乙烷; 1,1-（4,4'-二乙炔基二苯基）乙烷; 三（4-乙炔基苯基）甲烷; 4-乙炔基甲苯; 2,2' - （4,4'-二乙炔基二苯基）丙烷; 和4-乙炔基联苯。

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