公开(公告)号：DE3780523D1

公开(公告)日：1992-08-27

申请号：DE3780523

申请日：1987-06-10

Applicant: HOECHST AG

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

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

Abstract: New chiral esters of alpha-substd. phenylalkanoic acids and mesogenic hydroxyl cpds. are of formula (I). In (I), MO = the radical of a mesogenic OH cpd., MOH, after elimination of H, and is of formula R2-(A1)n1-(B-)n2-(A2)n3-O (II); R2 = opt. branched 1-12C alkyl, in which 1 or 2 non-adjacent -CH2- gps. can be replaced by -O- and/or -S-, or, if n1 = 1, can also be F, Cl, Br, CN or CF3; A1 and A2 independently = 1,4-phenylene, pyrimidin-2,5-diyl, 1,4-cyclohexylene, 1,3-dioxan-2,5-diyl, 1,3-dithian-2,5-diyl or 1,4-bicyclo(2,2,2)octylene, which can have F, Cl, Br, CN, CF3 and/or 1-12C alkyl substit(s). (in which 1 or 2 non-adjacent -CH2- gps. can be replaced by -O- and/or -S-); B = -CO-O-, -O-CO-, -CH2-CH2-, -O-CH2, -CH2O-, -CH=N-, -N=CH-, -N=N- or -N(O)=N-; n1, n2 and n3 independently = 0, 1 or 2 and n1 and n3 not both = 0; Y = an electropositive substit.; Z = Y or H; R1 = benzyl or phenyl and can be substd. in the aromatic pt. as for A1 and A2. Cpds. with Z = H, Y = F, Cl or Br, R2 = 1-11C alkoxy, A1and A2 = phenyl, n1 and n3 = 1 and n2 = 0 are excepted.

公开(公告)号：CA1288092C

公开(公告)日：1991-08-27

申请号：CA538334

申请日：1987-05-29

Applicant: HOECHST AG

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

IPC: C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C09K19/20 ,  C09K19/22 ,  C09K19/34 ,  C07C69/63 ,  C07D239/24

Abstract: HOE 86/F 118K of the disclosure Chiral esters formed from .alpha.-substituted carboxylic acids and mesogenic hydroxyl compounds and their use as dopant in liquid-crystalline phases The novel compounds are chiral esters formed from .alpha.-sub-stituted 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 mesogenic hydroxyl compound MOH after removing an H, the radical 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, 1,3dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl or 1,4bicyclo(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 (option ally, 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 = phenyl, n1, n3 = 1 and n2 = O 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.

公开(公告)号：ES2019077B3

公开(公告)日：1991-06-01

申请号：ES87107658

申请日：1987-05-26

Applicant: HOECHST AG

Inventor： HEPPKE GERD ,  BAHR CHRISTIAN ,  MULLER INGRID ,  OHLENDORF DIETER ,  WINGEN RAINER

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

公开(公告)号：NO881471L

公开(公告)日：1988-10-10

申请号：NO881471

申请日：1988-04-06

Applicant: HOECHST AG

Inventor： BAHR CHRISTIAN ,  HEPPKE GERD ,  LOETZSCH DETLEF ,  DUEBAL HANS-ROLF ,  GUENTHER DIETER ,  HEMMERLING WOLFGANG ,  MUELLER INGRID ,  WINGEN RAINER

IPC: C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/58 ,  G02F1/137 ,  C09K19/06 ,  G09F9/35

Abstract: Compounds which contain a polar chiral grouping (moiety) of the formula are suitable for use as a liquid-crystalline medium or as a chiral constituent of liquid-crystalline media in electro-optical switching and display elements which are based on the utilisation of the electroclinic effect and where the liquid-crystalline medium, when in the operating state, is present in the @A, @B or @E phase. These compounds are derivatives of alpha -chlorocarboxylic acids (I), alpha -hydroxypropionic acid (II), proline (III), epoxy compounds (IV) or their thioanalogues (V).

公开(公告)号：NO881471A

公开(公告)日：1988-10-10

申请号：NO881471

申请日：1988-04-06

Applicant: HOECHST AG

Inventor： BAHR CHRISTIAN ,  HEPPKE GERD ,  LOETZSCH DETLEF ,  DUEBAL HANS-ROLF ,  GUENTHER DIETER ,  HEMMERLING WOLFGANG ,  MUELLER INGRID ,  WINGEN RAINER

IPC: C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  G02F1/137 ,  C09K19/06 ,  C09K19/58 ,  G09F9/35

CPC classification number: C09K19/126 ,  C09K19/2021 ,  C09K19/3405 ,  C09K19/3411 ,  C09K19/3483 ,  C09K19/3491 ,  C09K19/3497 ,  C09K2019/3422

公开(公告)号：NO872266A

公开(公告)日：1987-12-01

申请号：NO872266

申请日：1987-05-29

Applicant: HOECHST AG

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

IPC: C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C09K19/20 ,  C09K19/22 ,  C09K19/34 ,  C07D239/00

CPC classification number: C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C09K19/20 ,  C09K19/2021 ,  C09K19/22 ,  C09K19/3463