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13 条记录 (耗时 0.018 秒)

    Process for preparation of optically active .alpha.-bromo and .alpha.-chlorocarboxylic compounds
    3.
    发明授权
    Process for preparation of optically active .alpha.-bromo and .alpha.-chlorocarboxylic compounds 失效
    光学活性α-溴和α-氯代羧酸化合物的制备方法

    公开(公告)号：US5852212A

    公开(公告)日：1998-12-22

    申请号：US662855

    申请日：1996-06-12

    申请人： Emil Albin Broger ,  Richard Buchecker ,  Yvo Crameri ,  Teodor Lukac

    发明人： Emil Albin Broger ,  Richard Buchecker ,  Yvo Crameri ,  Teodor Lukac

    IPC分类号： B01J31/24 ,  C07B61/00 ,  C07C51/36 ,  C07C53/19 ,  C07C55/32 ,  C07C59/135 ,  C07C59/147 ,  C07C227/14 ,  C07C229/20 ,  C07F15/00 ,  C07C53/15

    CPC分类号： C07C51/36 ,  Y02P20/55

    摘要： Optically active .alpha.-bromo- or .alpha.-chlorocarboxylic compounds of the formula ##STR1## wherein X is bromine or chlorine; M is hydrogen, NR.sub.4.sup.+1 or a cation of an alkali or alkaline earth metal; R.sup.1 is hydrogen or lower alkyl; n is 0 or 1; R is hydrogen, C.sub.1 -C.sub.20 alkyl, or C.sub.1 -C.sub.20 alkyl substituted in the terminal position with --NR.sup.2.sub.2, --COOR.sup.2, --OR.sup.3, a free or protected --CHO group or a ring A; R.sup.2 is hydrogen or a lower alkyl; R.sup.3 is hydrogen or a protecting group; ring A is an unsubstituted or substituted ring; and * is a center of chirality, are prepared by enantioselectively hydrogenating, in the presence of a ruthenium complex of an optically active diphosphine ligand, a (Z)-.alpha.,.beta.-unsaturated compound of the general formula ##STR2## wherein R, n, X and M are as defined above.

    摘要翻译： 式（I）的光学活性α-溴代或α-氯代羧酸化合物，其中X是溴或氯; M是氢，NR4 + 1或碱金属或碱土金属的阳离子; R1是氢或低级烷基; n为0或1; R是氢，C1-C20烷基或在具有-NR22，-COOR2，-OR3，游离或保护的-CHO基或环A的末端取代的C1-C20烷基; R2是氢或低级烷基; R3是氢或保护基; 环A是未取代或取代的环; 和*是手性中心，通过在光学活性二膦配体的钌络合物存在下，通过对映选择性氢化制备，通式为其中R，R 1，R 2， n，X和M如上所定义。

    Additive components for liquid crystalline materials
    6.
    发明授权
    Additive components for liquid crystalline materials 有权
    用于液晶材料的添加剂组分

    公开(公告)号：US08105662B2

    公开(公告)日：2012-01-31

    申请号：US10581716

    申请日：2004-11-25

    申请人： Zoubair Mohammed Cherkaoui ,  Teodor Lukac ,  Joachim Reichardt ,  Klaus Schmitt

    发明人： Zoubair Mohammed Cherkaoui ,  Teodor Lukac ,  Joachim Reichardt ,  Klaus Schmitt

    IPC分类号： C09K19/38 ,  C09K19/58 ,  C09K19/20 ,  C07C69/76 ,  G02F1/13

    CPC分类号： C09K19/586 ,  C09K19/126 ,  C09K19/18 ,  C09K19/2007 ,  C09K19/2021 ,  C09K19/3405 ,  C09K19/3411 ,  C09K19/58 ,  C09K2019/0448 ,  Y10T428/10 ,  Y10T428/1036

    摘要： The present invention relates to mesogenic, cross-linkable mixtures comprising (i) a cross-linkable liquid crystalline host compound comprising at least one cross-linkable liquid crystalline compound, and (ii) at least one chiral or achiral rod shaped additive component, wherein said additive component has a rigid core and comprises at least two fused or linked, optionally substituted, non-aromatic, aromatic, carbocyclic or heterocyclic groups, and also comprises at least one optionally substituted alkyl residue, and at least one polymerizable group and wherein the additive component has a transition temperature to the isotropic state of 40° C. or lower. The invention also relates to the novel chiral or achiral rod-shaped additive compounds used for the preparation of these mixtures, to mixtures according to the invention in form of an elastomer, polymer gel, polymer network or polymer film, to polymer networks and liquid crystalline polymer films prepared from these mixtures and to optical or electrooptical components comprising polymer networks and liquid crystalline polymer films prepared from such mixtures. Further, the invention relates to the use of the chiral or achiral rod shaped compounds as components of a cross-linkable liquid crystalline mixture in the production of orientated liquid crystalline polymers, to liquid crystalline mixtures comprising these compounds, to liquid crystalline polymers and liquid crystalline polymer networks prepared from such liquid crystalline mixtures, and to liquid crystalline devices comprising these compounds.

    摘要翻译： 本发明涉及介晶的可交联的混合物，其包含（i）包含至少一个可交联的液晶化合物的可交联的液晶宿主化合物和（ii）至少一种手性或非手性的棒状添加剂组分，其中 所述添加剂组分具有刚性核并且包含至少两个稠合或连接的，任选取代的非芳族，芳族，碳环或杂环基团，并且还包含至少一个任选取代的烷基残基和至少一个可聚合基团，并且其中 添加剂成分的转变温度为各向同性状态为40℃以下。 本发明还涉及用于制备这些混合物的新颖的手性或非手性棒状添加剂化合物，本发明的混合物以弹性体，聚合物凝胶，聚合物网络或聚合物膜的形式，与聚合物网络和液晶 由这些混合物制备的聚合物膜和包含由这些混合物制备的聚合物网络和液晶聚合物膜的光学或电光组分。 此外，本发明涉及手性或非手性棒状化合物在制备定向液晶聚合物中的可交联液晶混合物的组分，包含这些化合物的液晶混合物，液晶聚合物和液晶 由这种液晶混合物制备的聚合物网络，以及包含这些化合物的液晶装置。

    Ethynylcyclohexene compounds and processes for manufacture thereof
    7.
    发明授权
    Ethynylcyclohexene compounds and processes for manufacture thereof 失效
    乙炔基环己烯化合物及其制备方法

    公开(公告)号：US5227507A

    公开(公告)日：1993-07-13

    申请号：US498061

    申请日：1990-03-23

    申请人： Teodor Lukac ,  Milan Soukup

    发明人： Teodor Lukac ,  Milan Soukup

    IPC分类号： C07C35/17 ,  C07F7/08 ,  C07F9/54

    CPC分类号： C07C403/24 ,  C07C35/17 ,  C07C403/08 ,  C07F9/5435 ,  C07B2200/07 ,  C07C2101/16

    摘要： A process for the manufacture of compounds of the general formula ##STR1## wherein R.sup.1 signifies hydroxy or an etherified hydroxy group, and of zeaxanthin by converting a compound of the general formula ##STR2## wherein R.sup.1 has the above significance, in an inert organic solvent into the acetylenide and reacting this with methyl vinyl ketone, reducing the alcoholate obtained or the alcohol (obtained after hydrolysis of the alcoholate) of the general formula ##STR3## wherein R.sup.1 has the above significance, in an inert organic solvent with an aluminum hydride of the general formulaR.sub.x MAlH.sub.4-x IIIwherein M signifies alkali metal, R represents C.sub.1 -C.sub.10 -alkoxy or a group of the formula C.sub.n H.sub.2n+1 --O--C.sub.m H.sub.2m --O--, m and n each individually denote whole numbers of 1 to 7 and x stands for 0, 1, 2 or 3,and subsequently hydrolyzing to give the compound of formula IV and, if desired, converting the compound of formula IV obtained into zeaxanthin.

    摘要翻译： 制备其中R1表示羟基或醚化的羟基的化合物和玉米黄质的方法，其通过将惰性化合物转化成其中R 1具有上述含义的通式为I的化合物 将有机溶剂倒入乙炔基中，并将其与甲基乙烯基酮反应，将所得的醇化物或醇（通过醇化物水解后得到）通式为其中R 1具有上述含义，在惰性有机溶剂中与 通式为RxMAlH4-xIII的氢化铝，其中M表示碱金属，R表示C1-C10-烷氧基或式CnH2n + 1-O-CmH2m-O-基团，m和n各自表示1〜 7和x代表0,1,2或3，随后水解得到式Ⅳ化合物，如果需要，将得到的式Ⅳ化合物转化成玉米黄质。