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    6.
    发明专利
    未知

    公开(公告)号：DE3620049A1

    公开(公告)日：1987-12-17

    申请号：DE3620049

    申请日：1986-06-14

    Applicant: HOECHST AG

    Inventor： LEHMANN LUTZ DIPL CHEM ,  SCHEROWSKY GUENTER PROF DR ,  HEPPKE GERD PROF DR ,  BAHR CHRISTIAN DIPL CHEM

    IPC: C09K19/54 ,  C07C67/00 ,  C07C69/65 ,  C07C69/66 ,  C07C69/734 ,  C07C69/90 ,  C07C69/92 ,  C07C241/00 ,  C07C245/08 ,  C07C251/02 ,  C07C251/24 ,  C07C255/32 ,  C07C291/02 ,  C07C291/08 ,  C07D239/26 ,  C09K19/20 ,  C09K19/30 ,  C09K19/32 ,  C09K19/34 ,  C09K19/58 ,  G02F1/13 ,  G09F9/35

    Abstract: The novel compounds are chiral esters of alpha -substituted phenylalkanoic acids and mesogenic hydroxy compounds, the symbols in the general formula (I) (I) being defined as follows: MO=molecular radical of a mesogenic hydroxy compound MOH after removal of one H, the radical MO being expressed by the general formula (II) R2-(A1)n1-(B-)n2(A2)n3-O (II) where R2=straight-chain or branched (C1-C12)-alkyl, it being possible for one or two non-adjacent CH2 groups to be replaced by O and/or S atoms, or, if n1=1, also F, Cl, Br, CN or CF3, A1, A2=independently of one another 1,4-phenylene, diazine-2,5-diyl, diazine-3,6-diyl, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl or 1,4-bicyclo(2,2,2)octylene, it being possible for these groups also to be at least monosubstituted by F, Cl, Br, CN, CF3 and/or (C1-C12)-alkyl (one or two non-adjacent CH2 groups may be replaced by O and/or S atoms), B=CO-O, O-CO, CH2-CH2, OCH2, CH2O, CH=N, N=CH, N=N, N(O)=N, n1, n2, n3=independently of one another 0, 1 or 2, n1 and n3 not being 0 simultaneously, Y=an electron-attracting substituent, Z=H or an electron-attracting substituent, but not identical with Y, and R1=benzyl or phenyl, it being possible for these groups to be substituted in the aromatic moiety in the same way as A1 and A2, with the exception of the compounds with Z=H, Y=F, Cl or Br, R2=(C1-C11)-alkoxy, A1 and A2=phenyl, n1, and n3=1 and n2=0. The compounds are preferably used in tilted smectic liquid crystal phases, which are converted into ferroelectric liquid crystal phases by these compounds; they show high values of spontaneous polarization.

    10.
    发明专利
    未知

    公开(公告)号：DE3765842D1

    公开(公告)日：1990-12-06

    申请号：DE3765842

    申请日：1987-05-26

    Applicant: HOECHST AG

    Inventor： HEPPKE GERD PROF DR ,  BAHR CHRISTIAN ,  MUELLER INGRID DR ,  OHLENDORF DIETER DR ,  WINGEN RAINER DR

    IPC: C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C09K19/20 ,  C09K19/22 ,  C09K19/34

    Abstract: The novel compounds are chiral esters formed from alpha -substituted carboxylic acids and mesogenic hydroxyl compounds of the general formula (I) (I) in which the symbols have the following meaning: MO=molecular radical of a mesoganic hydroxyl compound MOH after removing an H, the radial MO being expressed by the general formula (II): R2-(A1)n1-(B-)(n2(A2)(n3-O(II) where the meaning of R2 is a straight-chain or branched (C1-C12)alkyl or alkenyl, it being possible for one or two nonadjacent CH2 groups to be replaced by O and/or S atoms, or if n1=1, also F, Cl, Br or CN, A1, A2 are, independently of each other, 1,4-phenylene, pyrimidine-2,5-diyl, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl, or 1,4-bicyclo(2,2,2)octylene, it being possible for said groups to be substituted at least singly by F, Cl, Br, CN and/or (C1-C12)alkyl (optionally, one or two nonadjacent CH2 groups are replaced by O and/or S atoms), B is CO-O, O-CO, CH2-CH2, OCH2, CH2O, CH=N, N=CH, N=N N(O)=N, n1, n2, n3 are, independently of each other, 0, 1 or 2, n1 and n3 not being simultaneously 0, Y is F, Cl, Br, CN or CF3, and R1 is branched, (C3-C9)alkyl, benzyl or phenyl, the compounds having R1=branched (C3-C7)alkyl, benzyl or phenyl, Y=F, Cl or Br, R2=(C1-C11)alkoxy, A1, A2= n1, n3=1 and n2=0 being excluded. The compounds preferably find application in tilted smectic liquid-crystalline phases which they transform into ferroelectric liquid-crystalline phases; they have high values of spontaneous polarization.

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