申请人:Merck Patent Gesellschaft mit beschrankter Haftung
公开号:US04752414A1
公开(公告)日:1988-06-21
Nitrogen-containing heterocyclic compounds of the formula I R.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --[Z.sup.2 --A.sup.3 ].sub.n --R.sup.2 wherein R.sup.1 and R.sup.2 in each case independently of one another are an alkyl group with 1-15 C atoms, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by O atoms and/or --CO-- groups and/or --O--CO-- groups and/or --CO--O-- groups, and one of the radicals R.sup.1 and R.sup.2 is also H, F, Cl, Br or CN, A.sup.1 is a 1,4-cyclohexylene group, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by O atoms, a 1,4-bicyclo-(2,2,2)-octylene group or a 1,3-dithiane-2,5-diyl group, Z.sup.1 and Z.sup.2 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, A.sup.2 and A.sup.3 in each case independently of one another are a 1,4-phenylene group, pyrimidine-2,5-diyl group, 1,4-cyclohexylene group, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by O atoms, 1,3-dithiane-2,5-diyl group or a 1,4-bicyclo(2,2,2)-octylene group and n is 0 or 1, with the provisos that (a) at least one of the groups A.sup.2 and A.sup.3 is a pyrimidine-2,5-diyl group, (b) at least one of the groups Z.sup.1 and Z.sup.2 is not a single bond if A.sup.2 is pyrimidine-2,5-diyl and R.sup.2 is alkyl or CN, (c) Z.sup.1 is not --CO--O-- if A.sup.3 is pyrimidine-2,5-diyl and A.sup.1 is 1,4-cyclohexylene, (d) n is not 0 if A.sup.1 is 1,4-cyclohexylene and Z.sup.1 is --CH.sub.2 CH.sub.2 --, and (e) Z.sup.1 is not --CH.sub.2 CH.sub.2 -- if R.sup.2 is CN, and (f) Z.sup.1 is --CH.sub.2 CH.sub.2 --, --OCH.sub.2 -- or --CH.sub.2 O--, if A.sup.1 is 1,4-cyclohexylene and --A.sup.2 --[Z.sup.2 --A.sup.3 ].sub.n -- is ##STR1## and acid addition salts thereof, can be used as components of liquid crystal phases.
含氮
杂环化合物的
化学式为I R.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --[Z.sup.2 --A.sup.3 ].sub.n --R.sup.2,其中R.sup.1和R.sup.2分别独立地是含有1-15个碳原子的烷基基团,也可能有一个或两个非相邻的CH.sub.2基团被氧原子和/或--CO--基团和/或--O--CO--基团和/或--CO--O--基团取代,R.sup.1和R.sup.2中的一个基团也可以是H、F、Cl、Br或CN,A.sup.1是1,4-环己基烷基,也可能有一个或两个非相邻的CH.sub.2基团被氧原子取代,1,4-双环-(2,2,2)-辛基基团或1,3-二
硫代-2,5-二基基团,Z.sup.1和Z.sup.2分别独立地是--CO--O--、--O--CO--、--CH.sub.2 CH.sub.2 --、--OCH.sub.2 --、--CH.sub.2 O--或单键,A.sup.2和A.sup.3分别独立地是1,4-苯基基团、
嘧啶-2,5-二基基团、1,4-环己基烷基,也可能有一个或两个非相邻的CH.sub.2基团被氧原子、1,3-二
硫代-2,5-二基基团或1,4-双环(2,2,2)-辛基基团取代,n为0或1,条件是(a) A.sup.2和A.sup.3中至少有一个是
嘧啶-2,5-二基基团,(b) 如果A.sup.2是
嘧啶-2,5-二基基团且R.sup.2是烷基或CN,则Z.sup.1和Z.sup.2中至少有一个不是单键,(c) 如果A.sup.3是
嘧啶-2,5-二基基团且A.sup.1是1,4-环己基烷基,则Z.sup.1不是--CO--O--,(d) 如果A.sup.1是1,4-环己基烷基且Z.sup.1是--CH.sub.2 CH.sub.2 --,则n不是0,(e) 如果R.sup.2是CN,则Z.sup.1不是--CH.sub.2 CH.sub.2 --,(f) 如果A.sup.1是1,4-环己基烷基且--A.sup.2 --[Z.sup.2 --A.sup.3 ].sub.n --是##STR1##及其酸盐,可用作液晶相的组分。