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EP0407569A1 - Biphenylylethanes - Google Patents

Biphenylylethanes

Info

Publication number
EP0407569A1
EP0407569A1 EP90903347A EP90903347A EP0407569A1 EP 0407569 A1 EP0407569 A1 EP 0407569A1 EP 90903347 A EP90903347 A EP 90903347A EP 90903347 A EP90903347 A EP 90903347A EP 0407569 A1 EP0407569 A1 EP 0407569A1
Authority
EP
European Patent Office
Prior art keywords
ethane
fluorobiphenyl
formula
phenylene
compounds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90903347A
Other languages
German (de)
English (en)
Inventor
David Ian 6 Swallow Close Bishop
Stephen Lewis
David Coates
Simon 2 Blackbird Close Greenfield
Eike Poetsch
Volker Meyer
Klaus-Peter Stahl
Volker Reiffenrath
Herbert Plach
Reinhard Hittich
Andreas WÄCHTLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck Patent GmbH
Original Assignee
Merck Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE3913164A external-priority patent/DE3913164C2/de
Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH
Publication of EP0407569A1 publication Critical patent/EP0407569A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/02—Ethers
    • C07C43/20—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring
    • C07C43/205—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring the aromatic ring being a non-condensed ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/12—Polycyclic non-condensed hydrocarbons
    • C07C15/18—Polycyclic non-condensed hydrocarbons containing at least one group with formula
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C25/00—Compounds containing at least one halogen atom bound to a six-membered aromatic ring
    • C07C25/18—Polycyclic aromatic halogenated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/02—Ethers
    • C07C43/20—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring
    • C07C43/225—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring containing halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/14—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
    • C09K19/3001—Cyclohexane rings
    • C09K19/3028—Cyclohexane rings in which at least two rings are linked by a carbon chain containing carbon to carbon single bonds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14—The ring being saturated

Definitions

  • Biphenylylethanes The invention relates to biphenylylethanes of the formula I, R 1 -CH 2 -X- (CH 2 CH 2 ) m -Ph-Ph-CH 2 CH 2 -Ph-Y-CH 2 -R 2 I wherein R 1 and R 2 each independently of the other alkyl,
  • Alkenyl or oxaalkyl with up to 12 carbon atoms one of the radicals R 1 and R 2 also H, m 0 or 1, X and Y each independently of one another O, S,
  • radical X also 1,4-phenylene or trans-1,4-cyclohexylene and radical Y also trans-1,4-cyclohexylene, and Ph 1,4 -Phenylene, one or two of the residues
  • the compounds of the formula I can be used as components of liquid-crystalline phases, in particular for displays which are based on the principle of the twisted cell, the guest-host effect, the effect of the deformation of aligned phases or the effect of dynamic scattering.
  • the object of the invention was to find new stable liquid-crystalline or mesogenic compounds with high birefringence, which are suitable as components of liquid-crystalline phases with low viscosity, high nematogenicity and favorable low-temperature behavior.
  • This object was achieved by the provision of the compounds of the formula I.
  • the compounds of the formula I are particularly suitable as components of liquid-crystalline phases.
  • they can be used to produce stable liquid-crystalline phases with a relatively large optical anisotropy and positive or negative dielectric anisotropy.
  • the substances of the formula I are particularly preferably suitable for use in mixtures for ECB effects.
  • the compounds of formula I have a wide range of uses. Depending on the choice of the substituents, these compounds can serve as base materials from which liquid-crystalline phases are predominantly composed; However, it is also possible to add compounds of the formula I to liquid-crystalline base materials from other classes of compounds in order, for example, to optimize the dielectric and / or optical anisotropy of such a dielectric.
  • the compounds of formula I are suitable also as intermediates for the manufacture of others
  • the compounds of the formula I are colorless in the pure state and form liquid-crystalline mesophases in
  • the invention thus relates to the compounds of the formula I and the use of these compounds as
  • the invention furthermore relates to liquid-crystalline phases containing at least one compound of the formula I, and to liquid-crystal display elements which contain them
  • R 1 , R 2 , X, Y and Ph have the meaning given above and below, unless expressly stated otherwise.
  • R 1 and / or R 2 are alkyl radicals in which an (“oxaalkyl”) CH 2 group can also be replaced by O atoms, they can be straight-chain or branched.
  • They are preferably straight-chain, have 2, 3, 4, 5, 6 or 7 carbon atoms and are therefore preferably ethyl,
  • Solubility in the usual liquid-crystalline base materials can be important, but especially as chiral dopants if they are optically active.
  • Branched groups of this type usually contain no more than one chain branch.
  • formula I includes both the optical antipodes and racemates and mixtures thereof.
  • X and Y are O or the single bond, with the single bond being particularly preferred.
  • Compounds in which one of the radicals Ph is 2- or 3-fluoro-1,4-phenylene are particularly preferred.
  • the radicals R 1 -X and R 2 -Y are preferably straight-chain alkyl or alkoxy.
  • Preferred compounds of the formula I and their sub-formulas are those in which at least one of the radicals contained therein has one of the preferred meanings indicated.
  • Particularly preferred smaller groups of compounds according to the invention are those of the following sub-formulas:
  • R 1 and R 2 have the meaning given in claim 1, X is 0 or a single bond, one of the radicals
  • Ph 2- or 3-fluoro-1,4-phenylene and the other
  • Radical Ph denotes 1,4-phenylene, and biphenylylethanes of the formula Ha,
  • R 1 and R 2 have the meaning given in claim 1.
  • the compounds of the formula I are prepared by methods known per se, as described in the literature (for example in the standard works such as Houben-Weyl, Methods of Organic Chemistry, Georg-Thieme-Verlag, Stuttgart), and under reaction conditions that are known and suitable for the implementations mentioned.
  • the starting materials can also be formed in situ in such a way that they are not isolated from the reaction mixture, but instead are immediately passed on to the
  • the compounds of formula I can be prepared by using a compound of formula II or a corresponding ethyne compound
  • R 3 -X-Ph-Ph-CH CH-Ph-YR 4 II under the conditions known to the person catalytically hydrogenated.
  • X, Y and Ph have the above
  • R 3 and R 4 each mean
  • the compounds of the formula II are obtainable in a manner known per se by Wittig or by Heck coupling from corresponding styrene compounds with halogen aromatics, which are either known or can be prepared in complete analogy to known compounds.
  • Ethynes of the formula II can also be prepared via the coupling of alkynyl-zinc compounds with aryl halides analogously to that of A.O. King, E. Negishi, F.J. Villani and A. Silveira in J. Org. Chem. 43 (1978) 358.
  • Ethynes of the formula II can also be prepared via the Fritsch-Buttenberg-Wiechell rearrangement (Ann. 279, 319, 327, 332, 1984), in which 1,1-diaryl-2-halogenethylenes are rearranged to diarylacetylenes in the presence of strong bases .
  • Ethynes of the formula II can also be prepared from 4-substituted phenyl- or cyclohexylacetylenes and aryl halides in the presence of a palladium catalyst, for example bis (triphenylphosphine) palladium (II) chloride, and copper (I) iodide (described in Synthesis (1980) 627 or Tetrahedron Letters 27 (1986) 1171).
  • the liquid-crystalline phases according to the invention consist of 2 to 15, preferably 3 to 12 components, including at least one compound of the formula I.
  • the other constituents are preferably selected from the nematic or nematogenic substances, in particular the known substances, from the classes of the azoxybenzenes, benzylidene anilines, Biphenyls, terphenyls, phenyl or cyclohexyl benzoates, cyclohexane-carboxylic acid phenyl or cyclohexyl esters, phenylcyclohexanes, cyclohexyl biphenyls, Cyclohexylcyclohexanes, cyclohexylnaphthalenes, 1,4-biscyclohexylbenzenes, 4,4'-biscyclohexylbiphenyls, phenyl or cyclophexylpyrimidines, phenyl- or cyclohexyld
  • R 6 -LGER 7 IV in which L and E each have a carbocyclic or heterocyclic ring system consisting of 1,4-disubstituted benzene and cyclohexane rings, 4,4'-disubstituted biphenyl, phenylcyclohexane and cyclohexylcyclohexane systems, 2,5-disubstituted pyrimidine - and 1,3-dioxane rings, 2, 6-disubstituted naphthalene, di- and tetrahydronaphthalene,
  • Y halogen preferably chlorine, or -CN
  • R 6 and R 7 denote alkyl, alkoxy, alkanoyloxy or alkoxycarbonyloxy having up to 18, preferably up to 8 carbon atoms, or one of these radicals by CN, NC, NO 2 , CF 3 , F, Cl or Br.
  • R 6 and R 7 are different from one another, one of these radicals usually being an alkyl or alkoxy group.
  • Other variants of the proposed substituents are also common. Many such substances or mixtures thereof are commercially available. All of these substances are obtainable by methods known from the literature.
  • the phases according to the invention contain about 0.1 to 99%, preferably 10 to 95%, of one or more compounds of the formula I. Also preferred are liquid-crystalline phases according to the invention, containing 0.1-40, preferably 0.5-30% of one or more compounds of Formula I.
  • the compounds of the formula I can also be used as components of smectic or chirally switched smectic liquid-crystalline phases. These phases are preferably chiral-chopped smectic liquid-crystalline phases, the achiral base mixture of which contains, in addition to compounds of the formula I, at least one other component with negative or small positive dielectric anisotropy. This further component (s) of the achiral base mixture can make up 1 to 50%, preferably 10 to 25%, of the base mixture.
  • the phases according to the invention are produced in a conventional manner.
  • the components are dissolved in one another, expediently at elevated temperature.
  • the liquid-crystalline phases according to the invention can be modified so that they can be used in all types of liquid-crystal display elements which have hitherto become known.
  • Such additives are known to the person skilled in the art and are described in detail in the literature.
  • conductive salts preferably ethyl dimethyl dodecyl ammonium 4-hexyloxybenzoate, tetrabutylammonium tetraphenylboranate or complex salts of crown ethers (see, for example, I. Haller et al., Mol. Cryst. Liq. Cryst. Volume 24, pages 249-258
  • dichroic dyes for producing colored guest-host systems or substances for changing the dielectric anisotropy, the viscosity and / or the orientation of the nematic phases are added.
  • dichroic dyes for producing colored guest-host systems or substances for changing the dielectric anisotropy, the viscosity and / or the orientation of the nematic phases are added.
  • Such substances are e.g. in DE-OS 22 09 127, 22 40 864, 23 21 632, 23 38 281, 24 50 088, 26 37 430, 28 53 728 and 29 02 177.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

Des biphénylyléthanes ont la formule (I): R1-CH2-X-(CH2CH2)m-Ph-Ph-CH2CH2-Ph-Y-CH2-R2, dans laquelle R1 et R2 représentent indépendamment l'un de l'autre alkyle, alkényle ou oxaalkyle ayant jusqu'à 12 atomes de C, un des résidus R1 et R2 pouvant également représenter H; m est égal à 0 ou 1; X et Y représentent indépendamment l'un de l'autre O, S, CO-O, O-CO, O-CO-O ou une liaison simple, le résidu X pouvant également représenter 1,4-phénylène ou trans-1,4-cyclohexylène et le résidu Y également trans-1,4-cyclohexylène, et Ph représente 1,4-phénylène, un ou deux résidus Ph pouvant également représenter 2- ou 3-fluor-1,4-phénylène, à condition que dans le cas (a), où X = 1,4-phénylène et m = 1, un ou deux résidus Ph représentent 2- ou 3-fluor-1,4-phénylène et que dans le cas (b), où X = trans-1,4-cyclohexylène , m = 0 et un ou deux résidus Ph représentent 2- ou 3-fluor-1,4-phénylène. Ces composés sont utiles comme composants de phases de cristaux liquides.
EP90903347A 1989-01-27 1990-01-22 Biphenylylethanes Withdrawn EP0407569A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3902327 1989-01-27
DE3902327 1989-01-27
DE3913164A DE3913164C2 (de) 1989-01-27 1989-04-21 Biphenylylethane und deren Verwendung zur Herstellung von flüssigkristallinen Phasen
DE3913164 1989-04-21

Publications (1)

Publication Number Publication Date
EP0407569A1 true EP0407569A1 (fr) 1991-01-16

Family

ID=25877169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90903347A Withdrawn EP0407569A1 (fr) 1989-01-27 1990-01-22 Biphenylylethanes

Country Status (5)

Country Link
US (1) US5093026A (fr)
EP (1) EP0407569A1 (fr)
JP (1) JPH03503651A (fr)
CA (1) CA2026112A1 (fr)
WO (1) WO1990008756A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7449249B2 (en) 2004-09-17 2008-11-11 Sulzer Metco Ag Spray powder
US8709384B2 (en) 2005-05-09 2014-04-29 Biosphere Medical, S.A. Compositions and methods using microspheres and non-ionic contrast agents
US8741351B2 (en) 2000-03-24 2014-06-03 Biosphere Medical, Inc. Microspheres for active embolization

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH089565B2 (ja) * 1989-07-20 1996-01-31 三洋化成工業株式会社 液晶化合物
EP0450368A3 (en) * 1990-03-31 1992-03-18 Merck Patent Gesellschaft Mit Beschraenkter Haftung Liquid crystal display and liquid crystal mixture
EP0476104B1 (fr) * 1990-04-02 1995-07-26 MERCK PATENT GmbH Melanges nematiques de cristaux liquides et affichage matriciel a cristaux liquides
JP6488623B2 (ja) 2014-02-25 2019-03-27 Jnc株式会社 液晶組成物および液晶表示素子
JP6476693B2 (ja) * 2014-02-26 2019-03-06 Jnc株式会社 液晶組成物および液晶表示素子
JP6677122B2 (ja) * 2015-08-20 2020-04-08 Jnc株式会社 両端にアルケニルを有する化合物、液晶組成物および液晶表示素子

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084194B1 (fr) * 1982-01-14 1986-04-30 MERCK PATENT GmbH Mélanges de cristaux liquides
DE3575158D1 (de) * 1984-07-12 1990-02-08 Hoffmann La Roche Fluessigkristalline gemische enthaltend komponenten mit einer 4-alkenyl- oder 2z-alkenyl-seitenkette.
US4621091A (en) * 1984-10-09 1986-11-04 Merck & Co., Inc. 3-hydroxybenzo[b]thiophene-2-sulfide derivatives compositions, and method of use therefor
DE3441937A1 (de) * 1984-11-16 1986-05-28 Bayer Ag, 5090 Leverkusen Fluessigkristallines material
WO1987005012A2 (fr) * 1986-02-21 1987-08-27 The Secretary Of State For Defence In Her Britanni Composes et melanges pour cristaux liquides, et dispositifs les contenant
DE3733818A1 (de) * 1987-10-07 1989-04-20 Merck Patent Gmbh Ferroelektrische fluessigkristalline phasen
IT1232356B (it) * 1988-03-10 1992-01-28 Merck Patent Gmbh Dialogenobenzol-derivati

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9008756A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8741351B2 (en) 2000-03-24 2014-06-03 Biosphere Medical, Inc. Microspheres for active embolization
US7449249B2 (en) 2004-09-17 2008-11-11 Sulzer Metco Ag Spray powder
US8709384B2 (en) 2005-05-09 2014-04-29 Biosphere Medical, S.A. Compositions and methods using microspheres and non-ionic contrast agents

Also Published As

Publication number Publication date
CA2026112A1 (fr) 1990-07-28
US5093026A (en) 1992-03-03
WO1990008756A1 (fr) 1990-08-09
JPH03503651A (ja) 1991-08-15

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