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    • 9. 发明授权
    • Chiral substituted tartarimides
    • 手性取代的酒石酰胺
    • US4996330A
    • 1991-02-26
    • US373179
    • 1989-06-28
    • Gunter ScherowskyPeter Schreiber
    • Gunter ScherowskyPeter Schreiber
    • C07D207/40C07D207/416C09K19/54C09K19/58G02F1/137G02F1/139
    • C07D207/416C09K19/588
    • Chiral substituted tartarimides, a process for their preparation and their use as doping agents in liquid-crystal mixtures.The new chiral N-substituted tartarimides which are esterified on both of the OH groups (pyrrolidinediones) are characterized by the general formula (I) ##STR1## in which the symbols have the following meaning: R.sup.2 denotes linear or branched (C.sub.1 -C.sub.16)-alkyl, it being possible for one or two non-adjacent CH.sub.2 groups to be replaced by O or S, or, if n1=1, also denotes F, Cl, Br or CN,A.sup.1 and A.sup.2 independently of one another denote 1,4-phenylene, diazine-2,5-diyl, diazine-3,6-diyl, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl or 1,4-bicyclo(2,2,2)octylene, it being also possible for these groups to be at least monosubstituted by F, Cl, Br, CN and/or (C.sub.1 -C.sub.12)-alkyl (if appropriate one or two non-adjacent CH.sub.2 groups are replaced by O atoms),denotes CO--O, O--CO, CH.sub.2 --CH.sub.2, OCH.sub.2, CH.sub.2 O, CH.dbd.N, N.dbd.CH or N.dbd.N,n1 and n3 independently of one another denote zero, 1 or 2, n1 and n3 not being zero at the same time,n2 denotes zero or 1, n1+n2+n3 being not more than 4, andR.sup.1 denotes linear or branched (C.sub.1 -C.sub.16)-alkyl or R.sup.3 --(A.sup.1 --).sub.n1 (B--).sub.n2 (A.sup.2 --).sub.n3, in which R.sup.3 is H or R.sup.2.These compounds are preferably used as doping agents in twistable liquid-crystal mixtures, in which they effect temperature compensation and twisting.
    • 手性取代的酒石酰胺,它们的制备方法及其作为液晶混合物中的掺杂剂的用途。 在两个OH基上被酯化的新的手性N-取代的酒石酰胺(吡咯烷二酮)的特征在于通式(I)其中符号具有以下含义:R 2表示直链或支链(C1 -C 16) - 烷基,一个或两个不相邻的CH2基团可以被O或S替代,或者如果n1 = 1,也可以彼此独立地表示F,Cl,Br或CN,A1和A2 表示1,4-亚苯基,二嗪-2,5-二基,二嗪-3,6-二基,1,4-亚环己基,1,3-二恶烷-2,5-二基,1,3-二噻烷-2,5 - 二基或1,4-二环(2,2,2)亚辛基,这些基团也可以至少被F,Cl,Br,CN和/或(C 1 -C 12) - 烷基单独取代(如果合适 一个或两个不相邻的CH2基团被O原子取代),表示CO-O,O-CO,CH2-CH2,OCH2,CH2O,CH = N,N = CH或N = N,n1和n3独立地为一个 另一个表示零,1或2,n1和n3同时不为零,n2表示零或1,n1 + n2 + n3不大于4,R1表示线 芳基或支链(C1-C16) - 烷基或R3-(A1-)n1(B-)n2(A2-)n3,其中R3是H或R2。 这些化合物优选用作可扭曲液晶混合物中的掺杂剂,其中它们实现温度补偿和扭曲。