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    • 6. 发明申请
    • 1,2-DISUBSTITUTED 2,6-DIFLUOROBENZENE COMPOUNDS AND LIQUID CRYSTAL MEDIA
    • 1,2-取代的2,6-二氟苯腈化合物和液晶介质
    • WO1991008184A2
    • 1991-06-13
    • PCT/EP1990002109
    • 1990-12-06
    • MERCK PATENT GESELLSCHAFT MIT BESCHRÄNKTER ...POETSCH, EikeMEYER, VolkerREIFFENRATH, VolkerWÄCHTLER, AndreasFINKENZELLER, UlrichKURMEIER, Hans-AdolfHITTICH, ReinhardRIEGER, BernhardCOATES, DavidGREENFIELD, SimonCLEMITSON, Robert, William
    • MERCK PATENT GESELLSCHAFT MIT BESCHRÄNKTER ...
    • C07C25/18
    • C07D239/26C07C17/12C07C17/263C07C17/269C07C25/18C07C25/24C07C43/225C07C69/76C07C255/50C07C2601/14C07D213/26C09K19/0403C09K19/12C09K19/14C09K19/16C09K19/3001C09K19/3003C09K19/3028C09K19/3441C09K19/3444C09K19/3469C09K2019/0407C09K2019/0444C09K2019/3021
    • 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-, ( alpha ), ( beta ) -CO-, -CO-O-, -O-CO- or -O-CO-O in such a way that O-atoms are not directly bound to each other, A and A , independently of each other, are (a) a trans-1,4-cyclohexylene residue in which one or more non-adjacent CH2 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 and Z , independently of each other, are -CO-O, -O-CO-, -CH2O-, -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 and A in the molecule is ( psi ) or ( delta ), and/or n is 1 or 2, whereby when -(Z -A )n=( epsilon ). X is F, Cl, -CF3, -OCF3, -OCF2H, -OC2F5, -CN or -NCS. Such compounds are suitable for use as components of liquid-crystal media.
    • 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C原子的未取代的烷基或烯基残基或具有1-15个C原子的烷基或烯基 被至少一个卤素残基取代,其中一个或多个CH 2基团可以彼此独立地被-O - , - S-,(α),(β)-CO-,-CO-O-, - O-CO-或-O-CO-O,使得O原子彼此不直接结合,A 1和A 2彼此独立地是(a)反式-1 其中一个或多个不相邻的CH 2基团可被-O-和/或-S-代替的4-亚环己基残基,(b)其中一个或两个CH基团可以被 N,(c)1,4-亚环己烯基,1,4-双环(2,2,2) - 亚辛基,哌啶-1,4-二基,萘-2,6-二基,十氢萘-2,6-二基 或1,2,3,4-四氢化萘-2,6-二基残基,其中残基(a)和(b)可以独立地被CN或一个或两个氟原子取代,Z 1和Z 2独立地 的 彼此分别是-CO-O,-O-CO-,-CH2O-,-OCH2-,-CH2CH2-,-CH = CH-,-C = C-或单键,m和n独立地为 另外,是0,1,2或3,(m + n)是1,2或3,X与R相同,或者是F,Cl,-CF3,-OCF3,-OCF2H,-OC2F5, -CN或-NCS,条件是分子中残基Z1和Z2中的至少一个是-CO-O-,-O-CO - , - CH 2 -O - , - OCH 2 - , - CH 2 CH 2 - 分子中CH = CH-或-C = C-和/或至少一个残基A 1和A 2为(psi)或(delta),和/或n为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。 这些化合物适合用作液晶介质的组分。