申请人:Merck Patent Gesellschaft mit beschrankter Haftung
公开号:US04639328A1
公开(公告)日:1987-01-27
Thienothiophene derivatives of the formula I R.sup.1 --(A.sup.1).sub.m --Z.sup.1 --A--(Z.sup.2 --A.sup.2).sub.n --R.sup.2 I in which R.sup.1 and R.sup.2 are each H or an alkyl group having 1-12 C atoms, in which, furthermore, one or two non-adjacent CH.sub.2 groups can be replaced by O atoms, --CO-- or --CH.dbd.CH-- groups, or are each F, Cl, Br, CN, --COOR or --O--COR, A.sup.1 and A.sup.2 are each 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl, tetrahydropyran-2,5-diyl, pyridazine-3,6-diyl or the corresponding N-oxide, piperidine-1,4-diyl, 1,4-bicyclo[2.2.2]octylene or pyrimidine-2,5-diyl groups which are unsubstituted or substituted by one or two F, Cl or Br atoms and/or CN groups and/or CH.sub.3 groups, A is a group of the formula 1 or 2 ##STR1## which is unsubstituted or substituted by one or two Cl and/or Br atoms, Z.sup.1 and Z.sup.2 are each --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O-- or a single bond, R is an alkyl group having 1-10 C atoms, m is 1 or 2 and n is 0 or 1, and where m is 2, the two groups A.sup.1 can be identical or different, can be used as components of liquid crystalline phases.
公式I中的Thienothiophene衍生物,其中R1和R2分别为H或具有1-12个C原子的烷基,此外,一个或两个非相邻的CH2基团可以被O原子,-CO-或-CH=CH-基团替换,或者它们分别为F,Cl,Br,CN,-COOR或-O-COR,A1和A2分别为1,4-苯撑基,1,4-环己撑基,1,3-二氧杂环戊烷-2,5-二基基,1,3-二硫杂环戊烷-2,5-二基基,四氢吡喃-2,5-二基基,吡嗪-3,6-二基基或相应的N-氧化物,哌啶-1,4-二基基,1,4-双环[2.2.2]辛烷或嘧啶-2,5-二基基,它们未被取代或被一个或两个F,Cl或Br原子和/或CN基团和/或CH3基团取代,A是公式1或2的基团 ##STR1## 它未被取代或被一个或两个Cl和/或Br原子取代,Z1和Z2分别为--CO--O--,--O--CO--,--CH2CH2--,--OCH2--,--CH2O--或单键,R是具有1-10个C原子的烷基,m为1或2,n为0或1,其中m为2时,两个A1基团可以相同或不同,可以用作液晶相的组分。