申请人:Merck Patent Gesellschaft mit beschrankter Haftung
公开号:US04713197A1
公开(公告)日:1987-12-15
Nitrogen-containing heterocyclic compounds of the formula I R.sup.I --(A--Z).sub.n --A--R.sup.2 I wherein R.sup.1 and R.sup.2 in each case independently of one another are alkyl group with 1-15 C atoms, wherein one or two non-adjacent CH.sub.2 groups can also be replaced by 0 atoms and/or --CO-- group and/or --O--CO-- groups and/or --CO--O-- groups, and one of the radicals R.sup.1 and R.sup.2 can also be H, CN, F, Cl or Br, the groups A in each case independently of one another are a 1,4-phenylene group, wherein one or two CH groups can also be replaced by N atoms, a 1,4-cyclohexylene group, wherein one or two CH.sub.2 groups which are not adjacent can be replaced by 0 atoms, a 1,3-dithiane-2,5-diyl group, a 1,4-bicyclo(2,2,2)-octylene group, a decahydronapthalene-2,6-diyl group or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, the group Z in each case independently of one another are --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O-- or a single bond and n is 3 or 4, with the proviso that (a) at least one of the groups A is a "1,4" phenylene group, wherein two CH groups are replaced by N atoms, and (b) at least one of the other groups A contains a cycloaliphatic radical and/or at least one group Z is not a single bond, can be used as components of liquid crystal phases.
化学式I的含氮杂环化合物中,R.sup.I --(A--Z).sub.n --A--R.sup.2 I,其中R.sup.1和R.sup.2各自独立地为具有1-15个C原子的烷基基团,其中一个或两个非相邻的CH.sub.2基团也可以被0原子和/或--CO--基团和/或--O--CO--基团和/或--CO--O--基团所取代,而R.sup.1和R.sup.2中的一个基团也可以是H、CN、F、Cl或Br,A基团各自独立地为1,4-苯撑基团,其中一个或两个CH基团也可以被N原子所取代,1,4-环己撑基团,其中一个或两个非相邻的CH.sub.2基团可以被0原子所取代,1,3-二噻吩-2,5-二基基团,1,4-双环(2,2,2)-辛撑基团,十氢萘-2,6-二基基团或1,2,3,4-四氢萘-2,6-二基基团,Z基团各自独立地为--CO--O--、--O--CO--、--CH.sub.2 CH.sub.2 --、--OCH.sub.2 --、--CH.sub.2 O--或单键,n为3或4,但必须满足(a)至少有一个A基团为“1,4”苯撑基团,其中两个CH基团被N原子所取代,且(b)至少有一个其他的A基团含有一个环烷基团和/或至少有一个Z基团不是单键,可以用作液晶相的组分。