公开(公告)号：DE4116751A1

公开(公告)日：1992-11-26

申请号：DE4116751

申请日：1991-05-23

Applicant: HOECHST AG

Inventor： ILLIAN GERD DR ,  MUELLER INGRID DR ,  WINGEN RAINER DR

IPC: C07D239/26 ,  C07D239/34 ,  C07D239/36 ,  C07F7/08 ,  C09K19/02 ,  C09K19/34

Abstract: Novel cyclohexylphenylpyrimidines of formula (I) are claimed as is also their prepn. by (i) alkylating 4-(4-trans-alkylcyclohexyl) benzamides (pref. with dialkyl sulphates) to give imidoethers; (ii) reacting the imidoethers with ammonia to give amidines which are then converted by reaction with 1,3-dicarbonyl cpds. to give the corresp. pyrimidine cpds.. In (I) R1 = opt. branched (a) chiral 2-16C alk(en)yl opt. with 1 or 2 non-neighbouring CH2 gps. replaced by -0-, -S-, -C0-, -C0.0-, -0.C0-, -Si(Me)2- or - C(Me)2- and opt. with one or more of the alk(en)yl H atoms replaced by F and opt. with the terminal CH3 gp. replaced by cyclopropylmethylene and R2 = opt. branched (a) chiral 1-10 (pref. 2-8)C alkyl. USE/ADVANTAGE - The use is claimed of (I) as components of liq. crystal mixts.. In partic. ferroelectric liq. crystal mixts. of 2-20 components are claimed which contain (I) pref. in an amt. of 1-25 mol.%, such mixts. being used in switching or display devices. (I) have low m.pt. and wide liq. crystal phases while still having suitable electro-optical properties (viscosity and switch-times and -angles) in liq. crystal mixts.. Mixts. with wide So ranges and high contrast are obtd..

公开(公告)号：DE3843228A1

公开(公告)日：1990-06-28

申请号：DE3843228

申请日：1988-12-22

Applicant: HOECHST AG

Inventor： ESCHER CLAUS DR ,  DUEBAL HANS-ROLF DR ,  MURAKAMI MIKIO ,  ILLIAN GERD DR ,  OHLENDORF DIETER DR

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/141

公开(公告)号：DE4023216A1

公开(公告)日：1992-01-23

申请号：DE4023216

申请日：1990-07-21

Applicant: HOECHST AG

Inventor： SCHEROWSKY GUENTER PROF DR ,  SEFKOW MICHAEL DR ,  ILLIAN GERD DR ,  WINGEN RAINER DR

IPC: C07D263/20 ,  C07D263/24 ,  C07D413/12 ,  C07D417/12 ,  C09K19/34

Abstract: Novel chiral oxazolidinones are of formula (I) or (II). R1 = opt. branched 1-16C alkyl or 3-16C alkenyl each opt. contg. asymmetric C atoms, etc.; R2 and R3 = H, 1-12C alkyl (opt. substd.) phenyl or cyclohexyl (opt. substd.); j, l and n = 0, 1 or 2; k and m = 0 or 1 with the following provisos: when j and/or l = 0, k = 0; when n = 0, m = 0; and j+l+n = 1-3; A1 and A2 = Ph, cyclohexyl, pyrimidin-2- or 5-yl, pyridin-2- or 3-yl, pyridazin-3-yl, pyrazin-2-yl, thiophen-2-yl, etc.; A3 = Ph, cyclohexyl, pyrimidin-2- or 5-yl, pyridin-2- or 3-yl or pyridazin-3-yl; M1 and M2 = -CO.O-, -O.CO-, -CH2.CH2-, -CH=CH-, -CH2.O- or -O.CH2-; and X = -O.CH2-, -CH2-, -C(O).O-, -O.C(O)-, -CH2.O- or -C2H4-. USE/ADVANTAGE - The use of (I) and (II) as doping agents for ferroelectric liq. crystal mixts. is claimed, with the mixt. pref. having a smectic phase. Also claimed are electrooptical switches and display devices which contain a liq. crystal mixt. including (I) or (II) together with 2 electrodes, 2 carrier plates and at least one orientation layer. (I) and (II) impart short switching times to the liq. crystal mixts. and are suitable for producing helix compensation in the mixts. Also, addn. of small amts. of (I) to tilted smectic phases causes strong twisting in the cholesteric phase.

公开(公告)号：DE3917472A1

公开(公告)日：1990-12-06

申请号：DE3917472

申请日：1989-05-30

Applicant: HOECHST AG

Inventor： DUEBAL HANS-ROLF DR ,  ESCHER CLAUS DR ,  ILLIAN GERD DR ,  MURAKAMI MIKIO ,  OHLENDORF DIETER DR

IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/1362 ,  G02F1/137 ,  G02F1/141

Abstract: PCT No. PCT/EP90/00761 Sec. 371 Date Nov. 27, 1991 Sec. 102(e) Date Nov. 27, 1991 PCT Filed May 11, 1990 PCT Pub. No. WO90/15360 PCT Pub. Date Dec. 13, 1990.A ferroelectric liquid crystal switching or display device, in which the liquid crystal film has a constant thickness, wherein one of the glass sheets in the device is planar and the other glass sheet has at least one step. The switching or display device of the present invention does not require shortened switching times or more contacts or drivers and does not show unwanted switching.

公开(公告)号：DE4111461A1

公开(公告)日：1992-10-15

申请号：DE4111461

申请日：1991-04-09

Applicant: HOECHST AG

Inventor： SCHLOSSER HUBERT DR ,  WINGEN RAINER DR ,  ILLIAN GERD DR ,  ESCHER CLAUS DR

IPC: C07D213/61 ,  C07D213/64 ,  C07D213/65 ,  C07D401/14 ,  C07D405/04 ,  C07D405/12 ,  C07F5/02 ,  C07F7/08 ,  C09K19/34 ,  C09K19/40

Abstract: New 2-fluoropyridine derivs. (I) are of formula (I), where R1-2 independently = H, F, Cl, CN, NCS, -CF3, -OCF3, -OCHF2 or linear or branched 1-16C alkyl (with or without asymmetrical C atom), in which one or two non-adjacent -CH2- gps. may be replaced by -O-, -S-, -CO-, -CO-O-, -O-CO-, -CO-S-, -S-CO-, -O-CO-O-, -CH=CH-, -C=C- or -Si(CH3)2- and also one or more H atoms of the alkyl gp. may be replaced by F, Cl, Br or CN; or a chiral gp. of the formulae (C1 to (C14) (where X = F or Cl; Y = -CO- or -CH2-; A1-4 independently = 1,4-phenylene, pyrazin-2,5-diyl, pyridazin-3,6-diyl, pyridin-2,5-diyl, pyrimidin-2,5-diyl (in which one or two H atoms may be replaced by F), trans-1,4-cyclohexylene (in which one or two H atoms may be replaced by CN), 1,3,4-thiadiazol-2,5-diyl, 1,3-dioxan-2,5-diyl, naphthalene-2,6-diyl, bicyclo(2.2.2)-octan-1,4-diyl or 1,3-dioxaborinan-2,5-diyl; M1-4 independently = -O-, -S-, -CO-, -CO-O-, -O-CO-, -CO-S-, -S-CO-, -O-CO-O-, -CH2-O-, -O-CH2-, -CH2-CH2-, -CH=CH- or -C=C-; R3-4 and R6-7 independently = H or linear or branched 1-16C alkl; or R3+R4 may also = -(CH2)4- or -CH2)5- if attached to a dioxolane system; M5 = -CH2-O-, -CO-O-, -O-CH2-, -O-CO- or a single bond; k, l, m, n, o, p, q and r = 0 or 1, such that (k+m+p+r) = less than 4 and more than 0.

公开(公告)号：DE4023493A1

公开(公告)日：1992-04-30

申请号：DE4023493

申请日：1990-07-24

Applicant: HOECHST AG

Inventor： SCHEROWSKY GUENTER PROF DR ,  SEFKOW MICHAEL DR ,  ILLIAN GERD DR ,  WINGEN RAINER DR

IPC: C07D263/20 ,  C07D263/24 ,  C07D413/12 ,  C07D417/12 ,  C09K19/34

Abstract: New chiral oxazolidin-2-one cpds. with a mesogenic side chain in the 3- or 4-position are of formula (IA) and (IB): where "star" = a chiral centre; (star) = opt. a chiral centre; R1 = opt. branched 1-16C alkyl or 3-16C alkenyl, opt. contg. asymmetrical C atoms, in which one or more non-adjacent -CH2- gps. may be replaced by -O-, -S-, -CO-, -O-CO- and/or -CO-O and one or more H may be replaced by F, Cl, Br or CN; R1-3 R2-3 = H, 1-12C alkyl (in which one -CH2- gp. may be replaced by -O- or -S- and the terminal CH3 gp. may be replaced by CH2OR4, CH2SR4 or CH2CONH2), phenyl or cyclohexyl (opt. substd. by ORT4, F or I); R4 = 1-10C alkyl; j, l and n = O, 1 or 2; k and m = O or 1; k = O if j and/or 1 = O; m = O if n = O, K + 1 + n = 1,2 or 3; A1-3 = phenyl, cyclohexyl, pyrimidin-5-yl,pyrimidin-2-yl, pyrid-2-yl, pyrid-3-yl, pyridazin-3-yl; and A1-2 = also pyazin-2-yl, 1,3,4-thiadiazol-2-yl, 1,3-dioxan-2-yl, 1,3-dioxan-5-yl, 1,3-dithian-2-yl, 1,3-dithian-5-yl, thiazol-5-yl, thien-2-yl, piperazin-2-piperazin-1-yl or thiazol-2-yl; M1-2 = -CO-O-, -O-CO-, -CH2CH2-, -CH=CH-, -CH2O- or -OCH2-; X = -O-CH2-, -CH2-, -CO-O-, -O-CO-, -CH2-O- or -C2H4-. They are prepd. by multistage synthesis, using standard techniques described in the literature.

公开(公告)号：DE4030579A1

公开(公告)日：1992-04-02

申请号：DE4030579

申请日：1990-09-27

Applicant: HOECHST AG

Inventor： ILLIAN GERD DR ,  WINGEN RAINER DR ,  MUELLER INGRID DR

IPC: C07D239/26 ,  C07D239/34 ,  C07F7/10 ,  C09K19/34 ,  C09K19/40 ,  C09K19/42 ,  G02F1/13

Abstract: Cyclohexylphenylpyrimidines of the formula (I) anched, chiral or achiral alkyl or alkenyl having 2 to 16 carbon atoms, in which one or two nonadjacent -CH2- groups may be replaced by -0-, -S-, -CO-, -COO-, -OCO-, -Si(CH3)2- or -C(CH3)2-, and in which one or more hydrogen atoms of the alkyl or alkenyl radical may be replaced by fluorine atoms, and in which the terminal CH3 group of the alkyl may also be replaced by R2 is straight-chain or branched, chiral or achiral alkyl having 1 to 10 carbon atoms, are particularly suitable components for ferroelectric liquid-crystal mixtures since they result in favorable properties, such as, for example, high contrast, when used in electrooptical switching and display devices.