Liquid crystalline compounds containing the bicyclo[2,2,2]-octane ring and the phenylisothiocyanate group, their manufacturing and liquid crystalline mixtures containing same
申请人:Wojskowa Akademia Techniczna
公开号:EP0309870A2
公开(公告)日:1989-04-05
New liquid crystalline compounds containing the bicyclo[2,2,2]octane ring and the phenylisothiocyanato group in their molecules of the general formula 1:
wherein: R is a normal or branched alkyl H2n+1Cn- or alkenyl H2n-1Cn- group containing up to 15 carbon atoms, some of the hydrogen atoms in the alkyl chain being sometimes substituted by a fluorine atom, Z is a single bond or -COO-, -OOC-, -CH₂O- or -C≡C- group, the ring A is a 1,4-disubstituted benzene ring or 2,5-disubstituted pyrimidine ring or a 2,5-disubstituted pyridine ring or a 2,5-disubstituted 1,3-dioxane ring, m stands an integer 0 or 1, X1, X2 and X3 are identical or different and each of them denotes a hydrogen atom or a fluorine atom or a chlorine atom or a bromine atom or a cyano group, however, if m=1 and the ring A is not a benzene ring then Z is also a -CH₂CO-, -CO-CH₂-, -CH=CH-, CHYCH₂-, -CH₂-CHY-, -C₆H₄-CH₂-CHY-, -C₆H₄-CHY-CH₂-, or C₆H₄-C≡C- group where Y is a hydrogen atom or a fluorine atom or a chlorine atom or a cyano group or a methoxy group or a hydroxy group are prepared and used as component of liquid crystal mixture. Method manufacturing of compounds 1, the liquid crystal mixture containing compounds 1 and their use for electrooptical devices are described.
通式 1 的分子中含有双环[2,2,2]辛烷环和苯基异硫氰基的新型液晶化合物:
其中R 是正常的或支化的烷基 H2n+1Cn- 或烯基 H2n-1Cn-,最多含有 15 个碳原子,烷基链中的一些氢原子有时被氟原子取代,Z 是单键或 -COO-、-环 A 是 1,4-二取代苯环或 2,5-二取代嘧啶环或 2,5-二取代吡啶环或 2,5-二取代 1,3-二氧杂环,m 为整数 0 或 1,X1、然而,如果 m=1 且环 A 不是苯环,则 Z 也是-CH₂CO-、-CO-CH₂-、-CH=CH-、CHYCH₂-、-ch₂-chy-、-c₆h₄-ch₂-chy-、-c₆h₄-chy-ch₂-、或 C₆H₄-C≡C-基团,其中 Y 为氢原子或氟原子或氯原子或氰基或甲氧基或羟基。此外,还介绍了化合物 1 的制造方法、含有化合物 1 的液晶混合物及其在光电设备中的用途。