1,4-DISUBSTITUIERTE 2,6-DIFLUORBENZOLVERBINDUNGEN UND FLÜSSIGKRISTALLINES MEDIUM
    1.
    发明授权
    1,4-DISUBSTITUIERTE 2,6-DIFLUORBENZOLVERBINDUNGEN UND FLÜSSIGKRISTALLINES MEDIUM 失效
    1,4-DISUBSTITUIERTE 2,6-DIFLUORBENZOLVERBINDUNGEN UNDFLÜSSIGKRISTALLINESMEDIUM

    公开(公告)号:EP0462237B1

    公开(公告)日:1997-03-12

    申请号:EP91900202.2

    申请日:1990-12-06

    申请人: MERCK PATENT GmbH

    摘要: Disclosed are 1,4-disubstituted 2,6-difluorobenzene compounds of the formula (I), in which R is an unsubstituted alkyl or alkenyl residue with 1-15 C-atoms or an alkyl or alkenyl group with 1-15 C-atoms substituted with at least one halogen residue, whereby one or more CH2 groups can be replaced, independently of each other, by -O-, -S-, (α), (β) -CO-, -CO-O-, -O-CO- or -O-CO-O in such a way that O-atoms are not directly bound to each other, A?1 and A2¿, independently of each other, are (a) a trans-1,4-cyclohexylene residue in which one or more non-adjacent CH¿2? groups can be replaced by -O- and/or -S-, (b) a 1,4-phenylene residue in which one or two CH groups can be replaced by N, (c) a 1,4-cyclohexenylene, 1,4-bicyclo(2,2,2)-octylene, piperidine-1,4-diyl, naphthalene-2,6-dyil, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl residue, whereby residues (a) and (b) can be substituted with CN or one or two fluorine atoms, Z?1 and Z2¿, independently of each other, are -CO-O, -O-CO-, -CH¿2?O-, -OCH2-, -CH2CH2-, -CH=CH-, -C=C- or a single bond, m and n, independently of each other, are 0,1,2 or 3, (m + n) being 1,2 or 3, and X has the same meaning as R, or is F, Cl, -CF3, -OCF3, -OCF2H, -OC2F5, -CN or -NCS, with the provision that at least one of the residues Z1 and Z2 in the molecule is -CO-O-, -O-CO-, -CH2-O-, -OCH2-, -CH2CH2-, -CH=CH- or -C=C- and/or at least one of the residues A?1 and A2¿ in the molecule is (γ) or (δ), and/or n is 1 or 2, whereby when -(Z2-A2)n=(ε). X is F, Cl, -CF3, -OCF3, -OCF2H, -OC2F5, -CN or -NCS. Such compounds are suitable for use as components of liquid-crystal media.

    摘要翻译: 公开了式(I)的1,4-二取代的2,6-二氟苯化合物,其中R是具有1-15个碳原子的未取代的烷基或烯基或具有1-15个碳原子的烷基或烯基 (α),(β)-CO - , - CO-O - , - O - , - O-CO-或-O-CO-O以使得O原子不直接彼此结合的情况下,A 1和A 2彼此独立地是(a)反-1,4- 亚环己基残基,其中一个或多个不相邻的CH 2 - 基团可以被-O-和/或-S-代替,(b)其中一个或两个CH基团可以被N代替的1,4-亚苯基残基,(c)1,4-亚环己烯基, (2,2,2) - 亚辛基,哌啶-1,4-二基,萘-2,6-二基,十氢化萘-2,6-二基或1,2,3,4-四氢化萘-2,6 其中残基(a)和(b)可以被CN或一个或两个氟原子取代,Z 1和Z 2彼此独立地为-CO-O,-O-CO-, - CH 2 O - , - OCH 2 - , - CH 2 CH 2 - , - CH = CH-,-C≡C-或单键,m和n彼此独立地为0,1,2或3, m + n)为1,2或3,并且X具有与R相同的含义,或者是F,Cl,-CF 3,-OCF 3,-OCF 2 H,-OC 2 F 5,-CN或-NCS,条件是至少 分子中残基Z1和Z2中的一个是-CO-O - , - O-CO - , - CH 2 -O-,-OCH 2 - , - CH 2 CH 2 - , - CH = CH-或-C≡C-和/ 或分子中的残基A 1和A 2中的至少一个是(γ)或(δ),和/或n是1或2,由此当 - (Z 2 -A 2)n =(ε)时。 X是F,Cl,-CF 3,-OCF 3,-OCF 2 H,-OC 2 F 5,-CN或-NCS。 这种化合物适合用作液晶介质的组分。