摘要:
Compounds of the formula (I) R1nullAnullZ1nullnull(1) in which: R1 is an alkyl radical having 1 to 8 carbon atoms or an alkenyl radical having 2 to 8 carbon atoms, where, in each case, one (nonterminal) nullCH2null group may also be replaced by nullOnull or nullC(nullO)Onull and/or one or more H may be replaced by F A is phenanthrene-2,7-diyl or 9,10-dihydrophenanthrene-2,7-diyl Z1 is F, OCHxF3-x or CHxF3-x, where, in each case, x is 0, 1 or 2, OC2HzF5-z or C2 HzF5-z, where, in each case, z is 0, 1, 2, 3 or 4, CHnullCF2 or Cl, with the proviso that 2-fluoro-7-methoxy-phenanthrene is excluded.
摘要翻译:式(I)化合物<段内式><内联式> R1-A-Z1(1) line-formula>其中:R1为1〜8的烷基 碳原子或具有2至8个碳原子的烯基,其中在每种情况下,一个(非终端)-CH 2 - 基团也可以被-O-或-C(= O)O-代替,和/或一个或多个 H可以被FA替换为菲-2,7-二基或9,10-二氢菲-2,7-二基Z1是F,OCH x F 3-x或CH x F 3-x,其中,在每种情况下,x是0,1或 2,OC2HzF5-z或C2H5F5-z,其中,在每种情况下,z是0,1,2,3或4,CH = CF 2或Cl,条件是排除了2-氟-7-甲氧基菲 。
摘要:
The invention relates to fluorinated aromatics of the formula (I) 1 where X is CH2, CnullO, CF2, O or S, Y is H or F, with the proviso that Y has to be F when X is CH2, and where the other parameters are as defined in claim 1, and also to their use in liquid-crystal mixtures, and also to liquid-crystal mixtures comprising these compounds and to liquid-crystal displays comprising these mixtures.
摘要:
The present invention relates to oxabicyclooctanes of the general formula I. 1 in which R1, R2, A1, A2, A3, A4, L1, L2, n1, n2 and n3 have the meanings specified in claim 1, and to their use in liquid-crystalline media.
摘要:
Hexabromocyclododecane with enhanced gamma isomer content is produced by brominating cyclododecatriene in a liquid medium comprised of (1) at least 50 wt % of at least one liquid inert organic solvent other than 1,4-dioxane having a solubility in water of at least 1 wt % at 25null C., and (2) water in an amount of up to about 40 wt %, in the presence of (3) about 0.5 to about 30 wt % of bromide ion (Brnull), each wt % being based on the total weight of the liquid portion of the liquid medium.
摘要:
Compounds of the formula (I) 1 in which: R1 is H, F, CF3, OCF3, OCF2H, OCFH2, an alkyl radical or an alkenyl radical; R2 is H, an alkyl radical or alkyloxy radical or an alkenyl or alkenyloxy radical; G2nullG1 is nullCHnullCHnull, nullCH2CH2null, nullCFnullCHnull, nullCHnullCFnull, nullCFnullCFnull, nullCH2null, nullCF2null; M1, M2 are each, independently of one another, nullC(nullO)Onull, nullOC(nullO)null, nullCH2Onull, nullOCH2null, nullOCF2null, nullCF2Onull, nullCnullCnull, nullCH2CH2null, nullCF2CF2null or a single bond; A1, A2 are each, independently of one another, phenylene-1,4-diyl, unsubstituted, monosubstituted or disubstituted by F, cyclohexane-1,4-diyl, 1,3-dioxan-2,5-diyl; m, n are each, independently of one another, zero or 1; mnullnnull0 or 1; The invention furthermore provides a liquid-crystal mixture comprising one or more compounds of the formula (I) in an amount of 1 to 40% by weight, based on the liquid-crystal mixture and liquid-crystal displays containing this liquid-crystal mixture.
摘要:
The invention relates to pentafluorosulfuranylbenzene derivatives of the formula I 1 in which R1, A1, A2, Z1, L1, L2, L3 and n are as defined in claim 1, and to the use thereof in liquid-crystalline media.
摘要:
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I 1 in which R1 and R2 are as defined in claim 1.