WO1993007234A1 - Halovinyl-derivatives - Google Patents

Halovinyl-derivatives Download PDF

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Publication number
WO1993007234A1
WO1993007234A1 PCT/EP1992/002131 EP9202131W WO9307234A1 WO 1993007234 A1 WO1993007234 A1 WO 1993007234A1 EP 9202131 W EP9202131 W EP 9202131W WO 9307234 A1 WO9307234 A1 WO 9307234A1
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WIPO (PCT)
Prior art keywords
trans
chlorovinyl
cyclohexyl
bicyclohexyl
unsubstituted
Prior art date
Application number
PCT/EP1992/002131
Other languages
French (fr)
Inventor
Martin Schadt
Frank Seils
Original Assignee
F. Hoffmann-La Roche Ag
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 to JP4506572A priority Critical patent/JP2932101B2/en
Application filed by F. Hoffmann-La Roche Ag filed Critical F. Hoffmann-La Roche Ag
Priority to EP92919398A priority patent/EP0559860B1/en
Priority to DE69208351T priority patent/DE69208351T2/en
Priority to US08/050,477 priority patent/US5364556A/en
Publication of WO1993007234A1 publication Critical patent/WO1993007234A1/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C07C255/49—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C255/50—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton to carbon atoms of non-condensed six-membered aromatic rings
    • 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
    • C07C25/24—Halogenated aromatic hydrocarbons with unsaturated side chains
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/02—Ethers
    • C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
    • C07C43/14—Unsaturated ethers
    • C07C43/17—Unsaturated ethers containing halogen
    • C07C43/172—Unsaturated ethers containing halogen containing rings other than six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/02—Ethers
    • C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
    • C07C43/14—Unsaturated ethers
    • C07C43/17—Unsaturated ethers containing halogen
    • C07C43/174—Unsaturated ethers containing halogen containing six-membered aromatic rings
    • C07C43/176—Unsaturated ethers containing halogen containing six-membered aromatic rings having unsaturation outside the aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/02—Ethers
    • C07C43/18—Ethers having an ether-oxygen atom bound to a carbon atom of a ring other than a six-membered aromatic ring
    • C07C43/192—Ethers having an ether-oxygen atom bound to a carbon atom of a ring other than a six-membered aromatic ring containing halogen
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
    • C09K19/3402—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom
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    • 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
    • C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
    • C09K19/3441—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having nitrogen as hetero atom
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    • 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
    • C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
    • C09K19/3441—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having nitrogen as hetero atom
    • C09K19/345—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having nitrogen as hetero atom the heterocyclic ring being a six-membered aromatic ring containing two nitrogen atoms
    • C09K19/3458—Uncondensed pyrimidines
    • C09K19/3469—Pyrimidine with a specific end-group other than alkyl, alkoxy or -C*-
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    • 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
    • C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • 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
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    • 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
    • C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
    • C09K19/3402—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom
    • C09K2019/3422—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom the heterocyclic ring being a six-membered ring

Definitions

  • the present invention is concerned with liquid crystal components having a terminal halovinyl group, liquid crystalline mixtures which contain such compounds and the use of such compounds for electro-optical purposes.
  • Liquid crystals are used primarily as dielectrics in indicating devices, since the optical properties of such compounds can be influenced by an applied voltage.
  • Electro-optical devices based on liquid crystals are well-known to a person skilled in the art and can be based on various effects. Such devices are, for example, cells having dynamic scattering, DAP cells (deformation of aligned phases), guest/host cells, TN cells having a "twisted nematic" structure, STN cells (“super-twisted nematic”), SBE cells (“superbirefringence effect”) and OMI cells (“optical mode interference").
  • the most common indicating devices are based on the Schadt-Helfrich effect and have a twisted nematic structure.
  • the liquid crystal materials must have a good chemical and thermal stability and a good stability towards electric fields and electromagnetic radiation. Further, at the usual operating temperatures in as broad a range as possible they should have a suitable mesophase or in mixtures shouild bring about or support a mesophase (for example, a nematic or a cholesteric phase for the aforementioned cells), but nevertheless should have a sufficiently low viscosity and in the cells should permit short response times, low threshold potentials and a high contrast. Further properties such as the electrical conductivity, the dielectric anisotropy and the optical anisotropy must fulfil different requirements
  • R signifies hydrogen, halogen, cyano, isothiocyanato, or alkyl, alkenyl or alkynyl with 1 to 15 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH 2 - groups can be replaced by -O-, -S-, -CO-, -COO- and/or -OOC-;
  • Q represents alkylene with 2 to 10 carbon atoms
  • a 1 , A 2 , A 3 each independently signify 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is unsubstituted, one or more -CH- groups can be replaced by nitrogen, or unsubstituted or cyano- or fluoro-substituted trans-1,4-cyclohexylene, or 1,4- cyclohexenylene, trans-1,3-dioxane-2,5-diyl or trans1,3-dithiane-2,5-diyl;
  • a 4 represents unsubstituted or cyano- or fluoro- substituted trans-1,4-cyclohexylene, or 1,4-cyclohexenylene, trans-l,3-dioxane-2,5-diyl, trans-1,3- dithiane-2,5-diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is
  • one or more -CH- groups can be replaced by nitrogen;
  • X 1 represents bromine or chlorine
  • Z 1 , Z 2 ,Z 3 each independently denote a single covalent bond
  • n, p each independently signify 0 or 1;
  • R 2 , R 3 each independently represent hydrogen or fluorine.
  • the compounds in accordance with the invention are characterized by the presence of a vinylic halogen atom. This gives a comparatively high positive contribution to the dielectric
  • the ready polarizability of the halovinyl group contributes to a surprisingly favourable influencing of the mesophases and of the electro-optical properties of the
  • compounds in accordance with the invention exhibit e.g. high clearing points and low threshold potentials, but without having an undesirably high electrical conductivity.
  • the compounds in accordance with the invention have a comparatively low viscosity and therefore have short switching times.
  • the compounds are excellently suited for use, inter alia, in TN, STN cells and in actively addressed indicating devices.
  • halovinyl compounds in accordance with the invention have an extraordinary thermal stability and a good stability towards electromagnetic radiation and towards electric fields.
  • the outstanding properties of these compounds can be coordinated optimally to the desired applications by selecting the rings A 1 , A 2 , A 3 and A 4 as well as the residue R.
  • the elastic properties can be modified depending on the choice of R.
  • the optical anisotropy can be varied in a wide range; for example, the compounds of formula I in which rings A 1 , A 2 and A 3 signify trans-1,4-cyclohexylene and/or trans-1,3-dioxane-2,5-diyl have low optical anisotropies and the compounds of formula I in which rings A 1 , A 2 and A 3 signify unsubstituted or fluoro-substituted 1,4-phenylene have especially high optical anisotropies.
  • alkyl, alkenyl or alkynyl with 1 to 15 carbon atoms which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH 2 - groups can be replaced by -O-, -S-, -CO-, -COO- and/or -OOC-
  • alkyl, alkenyl or alkynyl with 1 to 15 carbon atoms which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH 2 - groups can be replaced by -O-, -S-, -CO-, -COO- and/or -OOC-
  • Examples of preferred residues are methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, 1-methylpropyl, 1-methylheptyl, 2-methylbutyl, 3-methylpentyl, vinyl, 1E-propenyl, 1E-butenyl, 1E-pentenyl, 1E-hexenyl,
  • aforementioned residues preferably have 1 to 9 carbon atoms, especially 1 to 7 carbon atoms.
  • halogen embraces in the scope of the present invention chlorine, fluorine, bromine and iodine, especially fluorine, chlorine and bromine.
  • alkylene with 2 to 10 carbon atoms which is unsubstituted or substituted with at least one fluorine and in which one -CH 2 - group can be replaced by -O-, -S-, -COO- or -OOC-" embraces in the scope of the present invention alkylene residues with 2 to 10 carbon atoms such as, for example, ethylene, propylene, butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene; residues with 2 to 4 carbon atoms are especially preferred; alkyleneoxy residues with 2 to 10 chain atoms such as e.g.
  • alkylenoxycarbonyl residues such as, for example, methyleneoxycarbonyl, ethyleneoxycarbonyl, propyleneoxycarbonyl, butyleneoxycarbonyl, pentyleneoxycarbonyl, hexyleneoxycarbonyl, heptyleneoxycarbonyl, octyleneoxycarbonyl; and alkylenecarbonyloxy residues such as e.g. methylenecarbonyloxy, ethylenecarbonyloxy, propylenecarbonyloxy,
  • fluorinated residues are, for example, 1,2- difluoroethylene, perfluoroethylene, perfluoropropylene,
  • trans-1,4-cyclohexylene embraces in the scope of the present invention trans- 1,4-cyclohexylene, 1-cyano-trans-1,4-cyclohexylene, 4-cyano-trans-1,4-cyclohexylene, 1-fluoro-trans-1,4- cyclohexylene, 4-fluoro-trans-1,4-cyclohexylene and the like, especially trans-1,4-cyclohexylene.
  • 1,4-phenylene which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is unsubstituted, one or more -CH- groups can be replaced by nitrogen
  • rings such as, for example, 1,4-phenylene, 2-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene, 2,6-difluoro-1,4-phenylene, 2,3,5,6-tetrafluoro-1,4-phenylene, 2-cyano-1,4-phenylene, 2,3-dicyano-1,4-phenylene, 2-chloro-1,4-phenylene, 2,3-dichloro-1,4-phenylene, 2,6-dichloro-1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, pyrazine-2,5-diyl and the like.
  • a preferred aspect of the invention is concerned with compounds of general formula I in which A 1 , A 2 , A 3 each
  • a 4 represents trans-1,4-cyclohexylene, trans-1,3-dioxane-2,5-diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is
  • R represents hydrogen, alkyl, alkenyl or alkynyl with 1 to 7 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH 2 - groups can be replaced by -O-, -COO- and/or -OOC-, or, where ring A 1 represents an aromatic compound, -CH 2 CH 2 -, -COO-, -OOC- or -C ⁇ C-;
  • Q represents alkylene with 2 to 4 carbon atoms, which is unsubstituted or substituted with at least one of fluorine and in which one -CH 2 - group can be replaced by -O-, -COO- or -OOC-, or -CH 2 -, -CF 2 -, -CHF- or a single covalent bond;
  • R represents hydrogen, alkyl, alkenyl or alkyny
  • R 3 and A 4 stands for trans-1,3-dioxane-2,5-diyl, pyridine-2,5-diyl or pyrimidine-2,5-diyl.
  • Especially preferred compounds of the present invention are compounds of the general formula
  • a 1 , A 2 , A 3 each independently represent 1,4-phenylene, which is unsubstituted or substituted with at least one halogen, or pyridine-2,5-diyl, pyrimidine-2,5-diyl, trans-1,4- cyclohexylene or trans-1,3-dioxane-2,5-diyl;
  • Z 1 , Z 2 , Z 3 each independently signify a single covalent bond,
  • Q signifies -CH 2 CH 2 -, -OCH 2 - or a single covalent bond
  • R 1 signifies hydrogen, alkyl, alkenyl or alkynyl with 1 to 7 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one -CH 2 - group can be replaced by -O-, or, where ring A 1 represents an aromatic ring, also halogen or cyano;
  • n, p each independently signify 0 or 1;
  • a 4 signifies trans-1,4-cyclohexylene, trans-1,3- dioxane-2,5-diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is
  • X 1 represents chlorine or bromine.
  • Especially preferred compounds of formula I-a are
  • R 1 , Z 1 , Z 2 , Z 3 , Q and X 1 have the significance given in formula I-a and the ring represents 1,4-phenylene, which is unsubstituted or substituted with at least one fluorine.
  • Especially preferred compounds of formula I-a are the compounds in which ring A 4 represents trans- 1,4-cyclohexylene or, when Q is different from a single covalent bond, also 1,4- phenylene, which is unsubstituted or substituted with at least one fluorine.
  • R 1 signifies hydrogen, alkyl, alkenyl or alkynyl with 1 to
  • X 5 ,X 6 each independently denote hydrogen or fluorine, with the proviso that X 3 and X 4 are not simultaneously fluorine;
  • Z 1 , Z 2 , Z 3 each independently signify a single covalent bond, -CH 2 CH 2 -, -CH 2 O- , -OCH 2 - or -C ⁇ C-; preferably a maximum of one of groups Z 1 , Z 2 and Z 3 stands for -CH 2 CH 2 -, -CH 2 O-, -OCH 2 - or -C ⁇ C-.
  • the double bond of the chloro- or bromovinyl side-chain produced in this manner usually occurs in an E/Z ratio of above 75% E-configuration and thus the pure E-isomer can be obtained by simple crystallization. Thereby, the isomerization of the double bond, which is to some extent costly, does not apply.
  • the aldehydes which are used as starting materials are known and, where they are not commercially available, can be prepared in a manner known per se.
  • the double bond produced in this manner occurs as a rule as an E/Z mixture in a ratio of about 1:1. It will be evident that the compounds can be used not only in the E-form or in the Z-form, but also as a mixture of isomers.
  • R, A 1 , A 2 , A 3 , A 4 , Z 1 , Z 2 , Z 3 , Q, n and p have the above singificance and X 7 signifies halogen, preferably iodine,
  • R 2 and R 3 signify fluorine
  • X 8 represents chlorine, bromine or iodine
  • X 1 denotes chlorine or bromine
  • the compounds of formula I can be used in the form of mixtures with one another and/or with other liquid crystal components.
  • suitable liquid crystal components will be known in large numbers by a person skilled in the art, e.g. from D. Demus et al., Flussige Kristalle in Tabellen, VEB Deutscher Verlag fur
  • the invention is therefore also concerned with a liquid crystalline mixture having at least two components, wherein at least one component is a compound formula I (especially a compound referred to as being preferred).
  • the content of compounds of formula I in the mixtures in accordance with the invention can vary in a wide range.
  • the mixtures can consist exclusively of compounds of formula I.
  • R is chiral
  • the compounds in accordance with the invention can also be used a chiral dopants.
  • Such chiral dopants are frequently used only in relatively small amounts of e.g. about 0.1 to 10 wt.%.
  • the content of compounds of formula I in the mixtures in accordance with the invention is about 1-60 wt.%. A range of about 5-30 wt.% is generally preferred.
  • mixtures in accordance with the invention for nematic or cholesteric applications preferably contain, in addition to one or more compounds of formula I, one or more compounds from the group of compounds of the general formulae
  • R 4 , R 7 signify alkyl, alko xyalkyl,
  • q signifies 0 or 1
  • ring A 5 denotes 1,4-phenylene, pyridine-2,5-diyl, pyrimidine- 2,5-diyl, trans- 1,4-cyclohexylene or trans-1,3- dioxane-2,5-diyl;
  • R 5 represents cyano, isothiocyanato, fluorine, alkyl, 3E- alkenyl, 4-alkenyl, alkoxy, 2E-alkenyloxy, 3- alkenyloxy or 1-alkynyl;
  • ring A 6 signifies 1,4-phenylene or trans-1,4-cyclohexylene
  • R 6 denotes alkyl, 3E-alkenyl, 4-alkenyl or on trans-1,4- cyclohexylene also 1E-alkenyl or on 1 ,4-phenylene also cyano, isothiocyanato, alkoxy, 2E-alkenyloxy or 3- alkenyloxy;
  • R 8 signifies alkyl, 1E-alkenyl, 3E-alkenyl or 4-alkenyl
  • R 9 represent cyano, alkyl, 1E-alkenyl, 3E-alkenyl, 4alkenyl, alkoxy, 2E-alkenyloxy, 3-alkenyloxy, alkoxymethyl or (2E-alkenyl)oxymethyl
  • R 9 represent cyano, alkyl, 1E-alkenyl, 3E-alkenyl, 4alkenyl, alkoxy, 2E-alkenyloxy, 3-alkenyloxy, alkoxymethyl or (2E-alkenyl)oxymethyl
  • Z 4 ,Z 5 denote a single covalent bond or -CH 2 CH 2 -, with
  • R 10 signifies hydrogen, fluorine or chlorine
  • R 11 represents cyano, fluorine or chlorine
  • R 12 denotes hydrogen or fluorine
  • R 13 represent fluorine or chlorine.
  • aromatic ring used above denotes in this connection rings such as 1,4-phenylene, pyridine-2,5-diyl and pyrimidine-2,5-diyl.
  • saturated ring denotes trans-1,4-cyclohexylene and trans-l,3-dioxane-2,5-diyl.
  • the residues R 4 , R 5 , R 6 , R 7 , R 8 and R 9 preferably have 1 to 12 carbon atoms, especially 1 to 7 carbon atoms.
  • the mixtures in accordance with the invention can also contain optically active compounds (e.g. optically active 4'-alkyl- or 4'-alkoxy-4-biphenylcarbonitriles) and/or dichroic colouring substances (e.g. azo, azoxy or anthraquinone colouring substances).
  • optically active compounds e.g. optically active 4'-alkyl- or 4'-alkoxy-4-biphenylcarbonitriles
  • dichroic colouring substances e.g. azo, azoxy or anthraquinone colouring substances.
  • the amount of such compounds is determined by the solubility, the desired helical pitch, colour, extinction and the like.
  • the amount of optically active compounds and dichroic colouring substances is in each case a maximum of about 10 wt.% in the finished mixture.
  • the manufacture of the liquid crystalline mixtures and of the electro-optical devices can be effected in a manner known per se.
  • C signifies a crystalline phase
  • S signifies a smectic phase
  • N signifies a nematic phase
  • I signifies the isotropic phase
  • V 10 denotes the voltage for 10% transmission (viewing direction perpendicular to the plate surface).
  • t on and t off denote the switching-on time and
  • bromomethyltriphosphonium bromide were suspended in 10 ml of abs. tetrahydrofuran in a sulphonation flask while gassing with nitrogen and the suspension was cooled to -20°C and treated with 0.61 g of potassium tert.-butylate.

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  • Liquid Crystal Substances (AREA)

Abstract

Compounds of general formula (I), wherein R signifies hydrogen, halogen, cyano, isothiocyanato, or alkyl, alkenyl or alkynyl with 1 to 15 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH2- group(s) can be replaced by -O-, -S-, -CO-, -COO- and/or -OOC-; Q represents alkylene with 2 to 10 carbon atoms, which is unsubstituted or substituted with at least one fluorine and in which one -CH2- group can be replaced by -O-, -S-, -COO- or -OOC-, or -CH2-, -CF2-, -CHF- or a single covalent bond; A?1, A2, A3¿ each independently signify 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is unsubstituted, one or more -CH- groups can be replaced by nitrogen, or unsubstituted or cyano- or fluoro-substituted trans-1,4-cyclohexylene, or 1,4-cyclohexenylene, trans-1,3-dioxane-2,5-diyl or trans-1,3-dithiane-2,5-diyl; A4 represents unsubstituted or cyano- or fluoro-substituted trans-1,4-cyclohexylene, or 1,4-cyclohexenylene, trans-1,3-dioxane-2,5-diyl, trans-1,3-dithiane-2,5-diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is unsubstituted, one or more -CH- groups can be replaced by nitrogen; X1 represents bromine or chlorine; Z?1, Z2, Z3¿ each independently denote a single covalent bond, -CH¿2?O-, -OCH2-, -CH2CH2-, -COO-, -OOC-, -C=C-, -(CH2)4-, -(CH2)3O-, -O(CH2)3-, the trans form of -CH=CH-, -CH=CHCH2O-, -OCH2CH=CH-, -CH=CH(CH2)2- or -(CH2)2CH=CH-; n, p each independently signify 0 or 1; R?2, R3¿ each independently represent hydrogen or fluorine, as well as liquid crystalline mixtures which contain such compounds and their use for electro-optical purposes.

Description

Halovinyl-Derivatives
The present invention is concerned with liquid crystal components having a terminal halovinyl group, liquid crystalline mixtures which contain such compounds and the use of such compounds for electro-optical purposes.
Liquid crystals are used primarily as dielectrics in indicating devices, since the optical properties of such compounds can be influenced by an applied voltage. Electro-optical devices based on liquid crystals are well-known to a person skilled in the art and can be based on various effects. Such devices are, for example, cells having dynamic scattering, DAP cells (deformation of aligned phases), guest/host cells, TN cells having a "twisted nematic" structure, STN cells ("super-twisted nematic"), SBE cells ("superbirefringence effect") and OMI cells ("optical mode interference"). The most common indicating devices are based on the Schadt-Helfrich effect and have a twisted nematic structure. The liquid crystal materials must have a good chemical and thermal stability and a good stability towards electric fields and electromagnetic radiation. Further, at the usual operating temperatures in as broad a range as possible they should have a suitable mesophase or in mixtures shouild bring about or support a mesophase (for example, a nematic or a cholesteric phase for the aforementioned cells), but nevertheless should have a sufficiently low viscosity and in the cells should permit short response times, low threshold potentials and a high contrast. Further properties such as the electrical conductivity, the dielectric anisotropy and the optical anisotropy must fulfil different requirements
depending on the field of application and type of cell.
Compounds which fulfil these requirements are provided by the present invention.
The invention is concerned with compounds of the general formula
Figure imgf000004_0001
wherein
R signifies hydrogen, halogen, cyano, isothiocyanato, or alkyl, alkenyl or alkynyl with 1 to 15 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH2- groups can be replaced by -O-, -S-, -CO-, -COO- and/or -OOC-;
Q represents alkylene with 2 to 10 carbon atoms,
which is unsubstituted or substituted with at least one fluorine and in which one -CH2- group can be replaced by -O-, -S-, -COO- or -OOC-, or -CH2-, -CF2-, -CHF- or a single covalent bond;
A1, A2, A3 each independently signify 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is unsubstituted, one or more -CH- groups can be replaced by nitrogen, or unsubstituted or cyano- or fluoro-substituted trans-1,4-cyclohexylene, or 1,4- cyclohexenylene, trans-1,3-dioxane-2,5-diyl or trans1,3-dithiane-2,5-diyl;
A4 represents unsubstituted or cyano- or fluoro- substituted trans-1,4-cyclohexylene, or 1,4-cyclohexenylene, trans-l,3-dioxane-2,5-diyl, trans-1,3- dithiane-2,5-diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is
unsubstituted, one or more -CH- groups can be replaced by nitrogen;
X1 represents bromine or chlorine;
Z1, Z2,Z3 each independently denote a single covalent bond,
-CH2O-, -OCH2-, -CΗ2CH2-, -COO-, -OOC-, -OC-, -(CH2)4-, -(CH2)3O-, -O(CH2)3-, the trans form of -CH=CH-, -CH=CHCH2O-, -OCH2CH=CH-, -CH=CH(CH2)2- or
-(CH2)2CH=CH-;
n, p each independently signify 0 or 1;
R2, R3 each independently represent hydrogen or fluorine.
The compounds in accordance with the invention are characterized by the presence of a vinylic halogen atom. This gives a comparatively high positive contribution to the dielectric
anisotropy. In particular, the ready polarizability of the halovinyl group contributes to a surprisingly favourable influencing of the mesophases and of the electro-optical properties of the
compounds in accordance with the invention. Thus, the
compounds in accordance with the invention exhibit e.g. high clearing points and low threshold potentials, but without having an undesirably high electrical conductivity.
In spite of the high clearing points, the compounds in accordance with the invention have a comparatively low viscosity and therefore have short switching times. The compounds are excellently suited for use, inter alia, in TN, STN cells and in actively addressed indicating devices.
Contrary to expectations, the halovinyl compounds in accordance with the invention have an extraordinary thermal stability and a good stability towards electromagnetic radiation and towards electric fields.
The outstanding properties of these compounds can be coordinated optimally to the desired applications by selecting the rings A1, A2, A3 and A4 as well as the residue R. Thus, for example, the elastic properties can be modified depending on the choice of R. Further, the optical anisotropy can be varied in a wide range; for example, the compounds of formula I in which rings A1, A2 and A3 signify trans-1,4-cyclohexylene and/or trans-1,3-dioxane-2,5-diyl have low optical anisotropies and the compounds of formula I in which rings A1, A2 and A3 signify unsubstituted or fluoro-substituted 1,4-phenylene have especially high optical anisotropies. The term "alkyl, alkenyl or alkynyl with 1 to 15 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH2- groups can be replaced by -O-, -S-, -CO-, -COO- and/or -OOC-" embraces in the scope of the present invention straight-chain and branched (optionally chiral) residues with 1 to 15 carbon atoms such as alkyl, 1E-alkenyl, 3E-alkenyl, 4-alkenyl, alkenyl having a terminal double bond, alkoxy, 2E-alkenyloxy, 3- alkenyloxy, alkenyloxy having a terminal double bond, alkynyl, alkynyloxy, alkoxyalkynyl, alkoxyalkyl, alkenyloxyalkyl,
alkoxyalkenyl, alkoxycarbonyl, alkoxycarbonylalkoxy, alkanoyloxy, 1-haloalkyl, 2-haloalkyl, 2-haloalkoxy, 2-halo- alkoxycarbonyl, 1-cyanoalkyl, 2-cyanoalkyl, 2-cyanoalkoxy, 2-cyanoalkoxycarbonyl, 1-methylalkyl, 2-methylalkyl, 1 -methyl- alkoxy, 2-methylalkoxy, 2-methylalkoxycarbonyl and the like. Examples of preferred residues are methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, 1-methylpropyl, 1-methylheptyl, 2-methylbutyl, 3-methylpentyl, vinyl, 1E-propenyl, 1E-butenyl, 1E-pentenyl, 1E-hexenyl,
1E-heptenyl, 3-butenyl, 3E-pentenyl, 3E-hexenyl, 3E-heptenyl, 4-pentenyl, 4Z-hexenyl, 4Z-heptenyl, 5-hexenyl, 6-heptenyl,
7-octenyI, 8-nonenyl, 9-decenyl, 10-undecenyl, 11-dodecenyl, methoxy, ethoxy, propyloxy, butyloxy, pentyloxy, hexyloxy, heptyloxy, octyloxy, nonyloxy, decyloxy, undecyloxy, dodecyloxy, 1-methylpropyloxy, 1-methylheptyloxy, 2-methylbutyloxy,
3-methylpentyloxy, allyloxy, 2E-butenyloxy, 2E-pentenyloxy, 2E-hexenyloxy, 2E-heptenyloxy, 3-butenyloxy, 3Z-pentenyloxy, 3Z-hexenyloxy, 3Z-heptenyloxy, 4-pentenyloxy, 5-hexenyloxy, 6-heptenyloxy, 7-octenyloxy, 8-nonenyloxy, 9-decenyloxy,
10-undecenyloxy, 11-dodecenyloxy, 3 -methoxy- 1E-propenyl, 3-ethoxy-1E-propenyl, 4-methoxy-1E-butenyl, 4-ethoxy-1E-butenyl, 2-propenyloxymethyl, 2Z-butenyloxymethyl, 3-butenyloxymethyl, ethynyl, 1-propynyl, 1 -butynyl, 1-pentynyl, 3-butynyl, 3-pentynyl, 3-hexynyl, 2-propynyloxy, 2-butynyloxy, 2-pentynyloxy, 2-hexynyloxy, 3-methoxy-1-propynyl, 3-ethoxy-1-propynyl, methoxymethyl, ethoxymethyl, propyloxymethyl, allyloxymethyl, methoxyethyl, ethoxyethyl, propyloxyethyl, methoxypropyl, ethoxypropyl, propyloxypropyl, methoxybutyl, ethoxybutyl, propyloxybutyl, methoxycarbonyl, ethoxycarbonyl, propyloxycarbonyl, 1 -methylpropyloxycarbonyl, 1 -(methoxycarbonyl)ethoxy, 1-(ethoxycarbonyl)ethoxy, acetoxy,
propionyloxy, butyryloxy, 1-fluoropropyl, 1 -fluoropentyl, 1 -chloropropyl, 2-fluoropropyl, 2-fluoropentyl, 2-chloropropyl, 2-fluoropropyloxy, 2-fluorobutyloxy, 2-fluoropentyloxy, 2-fluorohexyloxy, trifluoromethoxy, difluoromethoxy, 2-chloropropyloxy, 2-fluorobutyloxy, 2-fluoropropyl- oxycarbonyl, 2-fluorobutyloxycarbonyl, 2-fluoropentyloxycarbonyl, 2-fluoro-3-methylbutyloxycarbonyl, 2-fluoro-4-methylpentyloxycarbonyl, 2-chloropropyloxycarbonyl, 1-cyanopropyl, 1 -cyanopentyl, 2-cyanopropyl, 2-cyanopentyl, 2-cyanopropyloxy, 2-cyanobutyloxy, 2-cyanopentyloxy, 2-cyanohexyloxy, 2-cyanopropyloxycarbonyl, 2-cyanobutyloxycarbonyl, 2-cyano-3-methylbutyloxycarbonyl, 2-cyano-4-methylpentyloxycarbonyl and the like. The
aforementioned residues preferably have 1 to 9 carbon atoms, especially 1 to 7 carbon atoms. The term "halogen" embraces in the scope of the present invention chlorine, fluorine, bromine and iodine, especially fluorine, chlorine and bromine.
The term "alkylene with 2 to 10 carbon atoms, which is unsubstituted or substituted with at least one fluorine and in which one -CH2- group can be replaced by -O-, -S-, -COO- or -OOC-" embraces in the scope of the present invention alkylene residues with 2 to 10 carbon atoms such as, for example, ethylene, propylene, butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene; residues with 2 to 4 carbon atoms are especially preferred; alkyleneoxy residues with 2 to 10 chain atoms such as e.g. methyleneoxy, ethyleneoxy, propyleneoxy, butyleneoxy, pentyleneoxy, hexyleneoxy, heptyleneoxy, octyleneoxy, nonyleneoxy, especially residues with 2 to 4 chain atoms; alkyleneoxyalkyl residues with 3 to 10 chain atoms such as e.g. methyleneoxymethyl, ethyleneoxymethyl, propyleneoxy methyl, butyleneoxymethyl, pentyleneoxymethyl, hexyleneoxymethyl, heptyleneoxymethyl, octyleneoxymethyl and the like, especially with 3 to 4 chain atoms, alkylenoxycarbonyl residues such as, for example, methyleneoxycarbonyl, ethyleneoxycarbonyl, propyleneoxycarbonyl, butyleneoxycarbonyl, pentyleneoxycarbonyl, hexyleneoxycarbonyl, heptyleneoxycarbonyl, octyleneoxycarbonyl; and alkylenecarbonyloxy residues such as e.g. methylenecarbonyloxy, ethylenecarbonyloxy, propylenecarbonyloxy,
butylenecarbonyloxy, pentylenecarbonyloxy,
hexylenecarbonyloxy, heptylenecarbonyloxy, octylenecarbonyloxy and the like, whereby these residues can be optionally
fluorinated. Such fluorinated residues are, for example, 1,2- difluoroethylene, perfluoroethylene, perfluoropropylene,
perfluorobutylene and the like.
The term "unsubstituted or cyano- or fluoro-substituted trans-1,4-cyclohexylene" embraces in the scope of the present invention trans- 1,4-cyclohexylene, 1-cyano-trans-1,4-cyclohexylene, 4-cyano-trans-1,4-cyclohexylene, 1-fluoro-trans-1,4- cyclohexylene, 4-fluoro-trans-1,4-cyclohexylene and the like, especially trans-1,4-cyclohexylene.
The term " 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is unsubstituted, one or more -CH- groups can be replaced by nitrogen" embraces rings such as, for example, 1,4-phenylene, 2-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene, 2,6-difluoro-1,4-phenylene, 2,3,5,6-tetrafluoro-1,4-phenylene, 2-cyano-1,4-phenylene, 2,3-dicyano-1,4-phenylene, 2-chloro-1,4-phenylene, 2,3-dichloro-1,4-phenylene, 2,6-dichloro-1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, pyrazine-2,5-diyl and the like. 1,4-Phenylene, 2-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene and 2,6-difluoro-1,4-phenylene are especially preferred rings.
A preferred aspect of the invention is concerned with compounds of general formula I in which A1 , A2, A3 each
independently represent 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen and/or cyano, or
pyridine-2,5-diyl, pyrimidine-2,5-diyl, trans-1,4-cyclohexylene or trans-1,3-dioxane-2,5-diyl; A4 represents trans-1,4-cyclohexylene, trans-1,3-dioxane-2,5-diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is
unsubstituted or substituted with at least one of halogen, or pyridine-2,5-diyl or pyrimidine-2,5-diyl; Z1 , Z2, Z3 each
independently represent a single covalent bond, -CH2O-, -OCH2-, -CH2CH2-, -COO-, -OOC- or -C≡C-; Q represents alkylene with 2 to 4 carbon atoms, which is unsubstituted or substituted with at least one of fluorine and in which one -CH2- group can be replaced by -O-, -COO- or -OOC-, or -CH2-, -CF2-, -CHF- or a single covalent bond; R represents hydrogen, alkyl, alkenyl or alkynyl with 1 to 7 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH2- groups can be replaced by -O-, -COO- and/or -OOC-, or, where ring A1 represents an aromatic ring, also halogen or cyano; R2 and R3 each independently represent hydrogen or fluorine, preferably hydrogen; and n, p and X1 have the aforementioned significance. In formula I, preferably a maximum of one of rings A1, A2,
R3 and A4 stands for trans-1,3-dioxane-2,5-diyl, pyridine-2,5-diyl or pyrimidine-2,5-diyl.
Especially preferred compounds of the present invention are compounds of the general formula
Figure imgf000009_0001
wherein
A1, A2, A3 each independently represent 1,4-phenylene, which is unsubstituted or substituted with at least one halogen, or pyridine-2,5-diyl, pyrimidine-2,5-diyl, trans-1,4- cyclohexylene or trans-1,3-dioxane-2,5-diyl; Z1, Z2, Z3 each independently signify a single covalent bond,
-CH2CH2-, -OCH2-, -CH2O- or -C≡C-;
Q signifies -CH2CH2-, -OCH2- or a single covalent bond; R1 signifies hydrogen, alkyl, alkenyl or alkynyl with 1 to 7 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one -CH2- group can be replaced by -O-, or, where ring A1 represents an aromatic ring, also halogen or cyano;
n, p each independently signify 0 or 1;
A4 signifies trans-1,4-cyclohexylene, trans-1,3- dioxane-2,5-diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is
unsubstituted or substituted with at least one halogen, or pyridine-2,5-diyl or pyrimidine-2,5-diyl; and
X1 represents chlorine or bromine. Especially preferred compounds of formula I-a are
compounds of the formula
Figure imgf000010_0001
Figure imgf000011_0001
Figure imgf000012_0001
Figure imgf000013_0001
Figure imgf000014_0001
Figure imgf000015_0001
Figure imgf000016_0001
wherein R1, Z1, Z2, Z3, Q and X1 have the significance given in formula I-a and the ring
Figure imgf000017_0001
represents 1,4-phenylene, which is unsubstituted or substituted with at least one fluorine.
Especially preferred compounds of formula I-a are the compounds in which ring A4 represents trans- 1,4-cyclohexylene or, when Q is different from a single covalent bond, also 1,4- phenylene, which is unsubstituted or substituted with at least one fluorine.
Quite particularly preferred compounds of general formula I-a are compounds of the formulae
Figure imgf000017_0002
Figure imgf000018_0001
wherein
R1 signifies hydrogen, alkyl, alkenyl or alkynyl with 1 to
5 carbon atoms, which is unsubstituted or substituted with at least one halogen and in which one -CH2- group can be replaced by -O-, or on a phenyl ring also bromine, chlorine, fluorine or cyano;
X2, X3, X4,
X5,X6 each independently denote hydrogen or fluorine, with the proviso that X3 and X4 are not simultaneously fluorine; Z1, Z2, Z3 each independently signify a single covalent bond, -CH2CH2-, -CH2O- , -OCH2- or -C≡C-; preferably a maximum of one of groups Z1, Z2 and Z3 stands for -CH2CH2-, -CH2O-, -OCH2- or -C≡C-.
Q has the significance given in formula I-a.
Of the compounds of general formulae 1-85 to I-100 there are particularly preferred those compounds in which Q signifies a single covalent bond and X1 signifies chlorine.
The compounds of general formula I in which R2 and R3 signify hydrogen can be manufactured in a manner known per se, e.g. by reacting a suitable aldehyde under Wittig conditions with a chloromethyl- or bromomethyltriphenylphosphonium halide, see Schemes 1 to 3.
The double bond of the chloro- or bromovinyl side-chain produced in this manner usually occurs in an E/Z ratio of above 75% E-configuration and thus the pure E-isomer can be obtained by simple crystallization. Thereby, the isomerization of the double bond, which is to some extent costly, does not apply. The aldehydes which are used as starting materials are known and, where they are not commercially available, can be prepared in a manner known per se.
Figure imgf000021_0001
Figure imgf000021_0002
Because the steric hindrance of the ring system does not take place, the double bond produced in this manner occurs as a rule as an E/Z mixture in a ratio of about 1:1. It will be evident that the compounds can be used not only in the E-form or in the Z-form, but also as a mixture of isomers.
The compounds of formula I in which R2 denotes hydrogen and R3 signifies fluorine can also be manufactured from the aldehydes of the formula
Figure imgf000022_0001
wherein R, A1, A2, A3, A4, Z1, Z2, Z3, Q, n and p have the above significance,
under Wittig conditions with bromofluoromethyl- or chlorofluoromethyltriphenylphosphonium chloride [D.J. Burton, J.
Fluorine Chem 23, (1983) 339].
The compounds of formula I in which R2 and R3 signify fluorine can also be manufactured in a manner known per se, e.g. by the direct coupling of a suitable halide of the general formula
Figure imgf000022_0002
wherein R, A1, A2, A3, A4, Z1, Z2, Z3, Q, n and p have the above singificance and X7 signifies halogen, preferably iodine,
with a suitable, prior-metallated difluoroethylene of the formula
Figure imgf000022_0003
wherein R2 and R3 signify fluorine; X8 represents chlorine, bromine or iodine; and X1 denotes chlorine or bromine.
Ethylenes of formula IV are known and their synthesis is
described, for example, in CA 99/13-104740 and in J. Org. Chem. 30,, 2121 (1965). The metallation of such ethylenes, for example with copper, is described in the literature (see e.g. J. March,
"Advanced Organic Chemistry", McGraw-Hill, Tokio, 1977, p. 408f).
The compounds of formula I can be used in the form of mixtures with one another and/or with other liquid crystal components. Suitable liquid crystal components will be known in large numbers by a person skilled in the art, e.g. from D. Demus et al., Flussige Kristalle in Tabellen, VEB Deutscher Verlag fur
Gπmdstoffindustrie, Leipzig, volumes I and II, and many of them are, moreover, commercially available.
The invention is therefore also concerned with a liquid crystalline mixture having at least two components, wherein at least one component is a compound formula I (especially a compound referred to as being preferred).
In mixtures, the compounds in accordance with the
invention are distinguished by their chemical stability. Having regard to the good solubility on the one hand and on the other hand having regard to the wide range of variation of the
properties and applications, the content of compounds of formula I in the mixtures in accordance with the invention can vary in a wide range. For example, the mixtures can consist exclusively of compounds of formula I. Alternatively, when R is chiral the compounds in accordance with the invention can also be used a chiral dopants. Such chiral dopants are frequently used only in relatively small amounts of e.g. about 0.1 to 10 wt.%. However, in general the content of compounds of formula I in the mixtures in accordance with the invention is about 1-60 wt.%. A range of about 5-30 wt.% is generally preferred.
The mixtures in accordance with the invention for nematic or cholesteric applications preferably contain, in addition to one or more compounds of formula I, one or more compounds from the group of compounds of the general formulae
Figure imgf000024_0001
Figure imgf000025_0001
wherein
R4, R7 signify alkyl, alko xyalkyl,
on saturated rings also 1E-alkenyl;
q signifies 0 or 1;
ring A5 denotes 1,4-phenylene, pyridine-2,5-diyl, pyrimidine- 2,5-diyl, trans- 1,4-cyclohexylene or trans-1,3- dioxane-2,5-diyl; R5 represents cyano, isothiocyanato, fluorine, alkyl, 3E- alkenyl, 4-alkenyl, alkoxy, 2E-alkenyloxy, 3- alkenyloxy or 1-alkynyl;
ring A6 signifies 1,4-phenylene or trans-1,4-cyclohexylene; R6 denotes alkyl, 3E-alkenyl, 4-alkenyl or on trans-1,4- cyclohexylene also 1E-alkenyl or on 1 ,4-phenylene also cyano, isothiocyanato, alkoxy, 2E-alkenyloxy or 3- alkenyloxy;
R8 signifies alkyl, 1E-alkenyl, 3E-alkenyl or 4-alkenyl; R9 represent cyano, alkyl, 1E-alkenyl, 3E-alkenyl, 4alkenyl, alkoxy, 2E-alkenyloxy, 3-alkenyloxy, alkoxymethyl or (2E-alkenyl)oxymethyl;
Z4,Z5 denote a single covalent bond or -CH2CH2-, with
two aromatic rings always being linked by a single covalent bond;
R10 signifies hydrogen, fluorine or chlorine;
R11 represents cyano, fluorine or chlorine;
R12 denotes hydrogen or fluorine; and
R13 represent fluorine or chlorine.
The term "aromatic ring" used above denotes in this connection rings such as 1,4-phenylene, pyridine-2,5-diyl and pyrimidine-2,5-diyl. The term "saturated ring" denotes trans-1,4-cyclohexylene and trans-l,3-dioxane-2,5-diyl.
The residues R4, R5, R6, R7, R8 and R9 preferably have 1 to 12 carbon atoms, especially 1 to 7 carbon atoms.
The mixtures in accordance with the invention can also contain optically active compounds (e.g. optically active 4'-alkyl- or 4'-alkoxy-4-biphenylcarbonitriles) and/or dichroic colouring substances (e.g. azo, azoxy or anthraquinone colouring substances). The amount of such compounds is determined by the solubility, the desired helical pitch, colour, extinction and the like. In general, the amount of optically active compounds and dichroic colouring substances is in each case a maximum of about 10 wt.% in the finished mixture. The manufacture of the liquid crystalline mixtures and of the electro-optical devices can be effected in a manner known per se. The manufacture of the compounds of formula I and of liquid crystalline mixtures containing these compounds are illustrated in more detail by the following Examples. C signifies a crystalline phase, S signifies a smectic phase, N signifies a nematic phase and I signifies the isotropic phase. V10 denotes the voltage for 10% transmission (viewing direction perpendicular to the plate surface). ton and toff denote the switching-on time and,
respectively, the swiching-off time and Δn denotes the optical anisotropy. Example 1
1.2 g of chloromethyltriphenylphosphonium chloride were suspended in 10 ml of abs. tetrahydrofuran in a sulphonation flask while gassing with nitrogen and cooled to -20°C. 0.41 g of potassium tert.-butylate was added to this suspension, the suspension was stirred for 30 minutes and subsequently treated at -20°C with a solution of 0.75 g of 4-chloro-4'-(4-trans-cyclohexylcarboxyaldehyde)-3-fluorobiphenyl in 5. ml of abs. tetrahydrofuran. The mixture was stirred at -20° C for a further 40 minutes, poured into 50 ml of ice-cooled hexane and, after stirring at 0°C for 90 minutes, filtered. From the filtrate there were isolated 1.06 g of crude 4-chloro-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-3-fluorobiphenyl which was purified firstly by chromatography on silica gel with hexane and then by crystallization from methylene chloride/methanol. M.p. (C-N) 159.9°C, cl.p. (N-I) 204.5°C.
The following compounds can be manufactured in an analogous manner:
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-fluorobenzene 1-chloro-4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} benzene, m.p. (C-I) 117.2°C 4-{4-trans-[(E)-2-chlorovinyI]cyclohexyl} -1-bromobenzene 4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-methylbenzene 4- {4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-ethylbenzene 4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1 -propylbenzene 4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-butylbenzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1 -pentylbenzene 4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1 -methoxybenzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1 -ethoxybenzene 4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-propyloxybenzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl } -1 -butyloxybenzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-pentyloxybenzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-1-methoxymethylbenzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-ethoxymethylbenzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-propyloxymetyl-benzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} benzonitrile
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-(trifluoromethyl)benzene
4- {4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1 -(trifluoro¬methoxy)benzene, m.p. 47.2° C
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1-(difluoromethoxy)benzene
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-methylpyridine 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-ethylpyridine
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-propylpyridine 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-butylpyridine 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl } -5-pentylpyridine 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-methoxypyridine
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-ethoxypyridine 2-{4-trans E)-2-chlorovinyl cyclohexyl -5-propyloxypyridine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-methoxymethylpyridine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-ethoxymethylpyridine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-propyloxymethylpyridine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-methylpyrimidine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-ethylpyrimidine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-propylpyrimidine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-butylpyrimidine 2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-pentylpyrimidine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-methoxypyrimidine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-ethoxypyrimidine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-propyloxypyrimidine
2-{4-trans- E)-2-chlorovinyl cyclohexyl -5-methoxymethylpyrimidine
2-{4-trans-[E)-2-chlorovinyl cyclohexyl -5-ethoxymethylpyrimidine
2-{4-trans-[[E)-2-chlorovinyl]cyclohexyl -5-propyloxymethylpyrimidine
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-methyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-ethyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-propyl-m-dioxane, m.p. (C-N) 46,8°C, d.p. (N-I) 56,0°C
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-butyl-m-dioxane 2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-pentyl-m- dioxane, m.p. (C-S) 17.9°C, S-N 26.3°C, cl.p. (N-I) 68.1°C
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-methoxy- m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-ethoxy-m- dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-propyloxy- m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-butyloxy- m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-pentyloxy- m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5- methoxymethyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5- ethoxymethyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-propyloxy¬methyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-vinyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-(1E-propenyl)-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-(3-butenyl)-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(3E-pentenyl)-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-pentenyl)-m-dioxane
4'-trans-[(E)-2-chlorovinyI]-4-trans-ethynyl(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-methy1(1, 1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-ethyl(1 ,1'-bicyclohexyl) 4'-trans-[(E)-2-chIorovinyl]-4-trans-propyl(1,1'-bicyclohexyl), m.p. (C-N) 30.6°C, cl.p. (N-I) 101.6°C
4'-trans-[(E)-2-chlorovinyl]-4-trans-butyl(1,1'-bicyclohexyl) 4'-trans-[(E)-2-chlorovinyl]-4-trans-pentyl(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-methoxy(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-ethoxy(1,1'- bicyclohexyl), m.p. (C-N) 57.8°C, cl.p. (N-I) 71.4°C
4'-trans-[(E)-2-chlorovinyl]-4-trans-propyloxy(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-butyloxy(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-pentyloxy(1,1'- bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-methoxymethyl(1,1'-bicyclohexyl), m.p. (C-N) 38.1°C, cl.p. (N-I) 80.8°C
4'-trans-[(E)-2-chlorovinyl]-4-trans-ethoxymethyl(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-propyloxymethyl(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-viny1(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-(1E-propenyl)(1,1'-bicyclohexyl), m.p. (C-N) 74.1°C, cl.p. (N-I) 129.5°C
4'-trans-[(E)-2-chlorovinyl]-4-trans-(3-butenyl)(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-(3E-pentenyl)(1,1'-bicyclohexyl)
4'-trans-[(E)-2-chlorovinyl]-4-trans-(4-pentenyl)(1,1'-bicyclohexyl)
1-(2-bromoethynyl)-4-{4-trans-[(E)-2-chlorovinyl]¬cyclohexyl}benzene
1-chloro-4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]¬ethyl}benzene, m.p. (C-I) 67.0°C
1-bromo-4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} benzene
4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-1-fluorobenzene
4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-1-bromobenzene 4-{ [4-trans-[(E)-2-chlorovinyl]cyclohexyl]methoxy}- benzonitrile
2-trans-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -5- propyl-m-dioxane
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1,2-difluorobenzene
1-chloro-4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -2- fluorobenzene, m.p. (C-I) 57.9°C
1-bromo-4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -2-fluorobenzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -2-fluorobenzonitrile
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -2-fluoro-1-(trifluoromethyl)benzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -2-fluoro-1- (trifluoromethoxy)benzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-2-fluoro-1-(difluoromethoxy)benzene
4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -2-fluorotoluene 4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-1-ethyl-2-fluorobenzene
4-{ [4-trans-[(E)-2-chlorovinyl]cyclohexyl]methoxy}-2,3-difluoro-1-propylbenzene
2-chloro-4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]-ethyl}benzonitrile
4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -1,2-difluorobenzene
1-chloro-4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-2-fluorobenzene
1-bromo-4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} - 2-fluorobenzene
4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-2-fluorobenzonitrile
2-chIoro-4-{4-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]butyl}-1-(trifIuoromethyl)benzene 4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-2-fluoro- 1-(trifluoromethoxy)benzene
4-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-2-fluoro-1-(difluoromethoxy)benzene
2-[4-trans-(2-chloroethyl)cyclohexyl]-1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}ethyne
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-fluorobenzene, m.p. (C-N) 103.3°C, cl.p. (N-I) 204.0°C
1-chloro-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene, m.p. (C-SB) 153°C, SB-N 156°C; cl.p. (N-I) 259°C
1-bromo-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene, m.p. (C-N) 185.8°C, cl.p. (N-I) 265.2°C
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-(trifluoromethyl)benzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}- 1-methoxy)benzene, m.p. (C-N) 87.7°C, cl.p. (N-I) 265.8°C
1-ethoxy-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene, m.p. (C-N) 86.5°C, cl.p. (N-I) 267.5°C
1-propyloxy-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclo¬hexyl]-4-trans-yl}benzene
1-methoxymethyl-4-{4'-trans-[(E)-2-chlorovinyl][1,1'- bicyclohexyl]-4-trans-yl}benzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-(trifluoromethoxybenzene, SB-N 100.2°C, cl.p. (N-I) 200.6°C
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}- 1-(difluoromethoxy)benzene, m.p. (C-SB) 71.4°C, SB-N 85.6°C, cl.p. (N-I) 223.5°C
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzonitrile, m.p. (C-N) 126.0°C, cl.p. (N-I) 307.8°C
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}toluene, m.p. (S-N) 99.6°C, cl.p. (N-I) 242.2°C
1-ethyl-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}benzene
1-propyl-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene 2-{4-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]phenyl}-5- ethoxypyrimidine
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-4-(4-trans- propylcyclohexyl)benzene S-N 138.3°C, cl.p. (N-I) 214.7°C
2-{4-[[4-trans-[(E)-2-chlorovinyl]cyclohexyl]oxymethyl]- phenyl} -5-pentoxypyridine
2-trans-{4-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]- phenethyl} -5-butyl-m-dioxane
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}- 1,2-difluorobenzene, m.p. (C-N) 65.4°C, cl.p. (N-I) 173.7°C
1-chloro-4-{4'-trans-[(E)-2-chlorovinyl] [1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene, m.p. (C-N) 132.9°C, cl.p. (N-I)
226.3 °C
1-bromo-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene
4-{4'-trans-[(E)-2-chlorovinyl] [1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzonitrile
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl} - 2-fluoro-1-(difluoromethoxy)benzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl} - 2-fluoro-1-(trifluoromethoxy)benzene
1-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-3,5-difluorobenzene, m.p. (C-N) 90.8°C, cl.p. (N-I) 141.2°C
{ 4'-trans-[(E)-2-chlorovinyl] [1,1'-bicyclohexyl]-4-trans-yl}-1,2,6-trifluorobenzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-chloro-2,6-difluorobenzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-bromo-2,6-difluorobenzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'--bicyclohexyl]-4-trans-yl} - 1-trifluoromethyl-2,6-difluorobenzene
4-{4'-trans-[(E)-2-chlorovinyI][1,1'-bicyclohexyl]-4-trans-yl} -1-trifluoromethoxy-2,6-difluorobenzene
4-[4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-difluoromethoxy-2,6-difluorobenzene 4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2,6-difluorobenzonitrile
4-{4'-trans-{(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2,6-difluorotoluene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}- 1 -ethyl-2,6-difluorobenzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-propyl-2,6-difluorobenzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-methoxy-2,6-difluorobenzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-ethoxy-2,6-difluorobenzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-1-propyloxy-2,6-difluorobenzene
4-{4'-trans-[(E)-2-chloroviny1][1,1'-bicyclohexyl]-4-trans-yl}- 1-methoxymethyl-2,6-difluorobenzene
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-(3,2'-difluoro-4-trifluoromethoxy)biphenyl
5-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-2-{[3-fluoro-4-(difluoromethoxy)]phenyl}-m-dioxane
5-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-2-{[3-fluoro-4-(trifluoromethyl)]pheny1}pyrimidine
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorotoluene, m.p. (C-N) 100.3°C, cl.p. (N-I) 212.9°C
1-ethyl-2-fluoro-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene
1-propyl-2-fluoro-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene
1-trifluoromethyl-2-fluoro-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene
1-methoxy-2-fluoro-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene
1-ethoxy-2-fluoro-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene
1-propyloxy-2-fluoro-4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene 1-methoxymethyl-2-fluoro-4- {4'-trans-[(E)-2- chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl} benzene
4-trans-{4-[2-chloro-l,l,2,2-tetrafluoroethyl]phenyl} -4'- trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -2,3- dicyano-4-propylbiphenyl
5-trans-(4-butylphenyl)-2-{4-trans-[(E)-2-chlorovinyl]- cyclohexyl}-m-dioxane
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-4-fluorobiphenyl 4-chloro-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl, m.p. (C-N) 211.0°C, cl.p. (N-I) 266.5°C
4-bromo-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl 4-cyano-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl 4-trifluoromethyl-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl
4-trifluoromethoxy-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} biphenyl
4-difluoromethoxy-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl
4-methyl-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl
4-ethyl-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl 4-propyl-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl 4-methoxy-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -biphenyl
4-ethoxy-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl
4-propyloxy-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-biphenyl
4-methoxymethyl-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} biphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-3,4-difluorobiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-3-fluoro-4-chlorobiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-bromobiphenyl 4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-cyanobiphenyl
4'- {4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-methylbiphenyl
4'- {4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-ethylbiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-propylbiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4--ethoxybiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4¬ethoxybiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-propyloxybiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4- -ethoxymethylbiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-trifluoromethylbiphenyl
4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-trifluoromethoxybiphenyl
4*-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -3-fluoro-4-difluoromethoxybiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4-(methoxymethyl)biphenyl
4*-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4-fluorobiphenyl
4'- {2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4-chlorobiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4-bromobiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4-cyanobiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl } -4-methylbiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl } -4-ethylbiphenyl 4'-[2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4- propylbiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4- methoxybiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4- ethoxybiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4- propyloxybiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-4- trifluoromethylbiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4- trifluoromethoxybiphenyl
4'-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -4- difluoromethoxybiphenyl
4-(2-chloroethyI)-4'-{4-trans-[(E)-2-chlorovinyl]- cyclohexyl}-2,3-difluorobiphenyl
4-trans-[(E)-2-chlorovinyl]-4'-trans-(4-fluorophenethyl)- (1,1'-bicyclohexyl), m.p. (C-I) 103.3°C, cl.p. (N-I) 204.0°C
4'-trans-(4-chlorophenethyl)-4-trans-[(E)-2-chlorovinyl]-(1,1'-bicyclohexyl)
4'-trans-(4-bromophenethyl)-4-trans-[(E)-2-chlorovinyl]-(1,1'-bicyclohexyI), SB-N 134.0°C, cl.p. (N-I) 207.5°C
4'-trans-(4-trifluoromethylphenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-trifluoromethoxyphenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-difluoromethoxyphenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-cyanophenethyl)-4-trans-[(E)-2-chlorovinyl]-(1,1'-bicyclohexyl)
4*-trans-(4-methylphenethyl)-4-trans-[(E)-2-chlorovinyl]-(1,1'-bicyclohexyl)
4'-trans-(4-ethylphenethyl)-4-trans-[(E)-2-chlorovinyl]-(1,1'-bicyclohexyl)
4'-trans-(4-propylphenethyl)-4-trans-[(E)-2-chlorovinyl]- (1,1'-bicyclohexyl) 4'-trans -(4-methoxyphenethyl)-4-trans -[(E)-2-chlorovinyl](1 ,1'-bicyclohexyl)
4'-trans-(4-ethoxyphenethyl)-4-trans- [(E)-2-chlorovinyl]- (1 ,1 '-bicyclohexyl)
4'-trans-(4-propyloxyphenethyl)-4-trans- [(E)-2-chlorovinyl](1 ,1'-bicyclohexyl)
4'-trans-(4-methoxymethylphenethyl)-4-trans- [(E)-2-chlorovinyl](1 , 1'-bicyclohexyl)
4-trans-[(E)-2-chlorovinyl] -4'-trans -(3,4-difluorophenethyl)( 1 ,1'-bicyclohexyl)
4'-trans -(4-chloro-3-fluorophenethyl)-4-trans -[(E)-2-chlorovinyl](1,1'-bicyclohexyl), m.p. (C-N) 95.5°C, cl.p. (N-I) 180.1°C
4'-trans-(4-bromo-3-fluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1 ,1'-bicyclohexyl)
4'-trans-(4-trifluoromethyl-3-fluorophenethyl)-4-trans- [(E)-2-chlorovinyl](1 ,1'-bicyclohexyl)
4'-trans-(4-trifluoromethoxy-3-fluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-difluoromethoxy-3-fluorophenethyl)-4-trans- [(E)-2-chlorovinyl]( 1,1 '-bicyclohexyl)
4'-trans-(4-cyano-3-fluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1 ,1'-bicyclohexyl)
4'-trans-(4-methyl-3-fluorophenethyl)-4-trans- [(E)-2-chlorovinyl](1 , 1'-bicyclohexyl)
4'-trans-(4-ethyl-3-fluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1 ,1'-bicyclohexyl)
4'-trans-(4-propyl-3-fluorophenethyl)-4-trans- [(E)-2-chlorovinyl](1 ,1'-bicyclohexyl)
4'-trans-(4-methoxy-3 -fluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1 ,1'-bicyclohexyl)
4'-trans-(4-ethoxy-3-fluorophenethyl)-4-trans-[(E)-2-chloroviny1](1 ,1'-bicyclohexyl)
4'-trans-(4-propyloxy-3-fluorophenethyl)-4-trans- [(E)-2-chlorovinyl](1 ,1'-bicyclohexyl) 4'-trans-(4-methoxymethyl-3-fluorophenethyl)-4-trans-[(E)- 2-chlorovinyl](1,1'-bicyclohexyl)
4-trans-[(E)-2-chlorovinyl]-4'-trans-{ [3,5-difluoro-4- (perfluoropropyl)phenoxy]methyl} (1,1'-bicyclohexyl)
1-(2-chloro-1,1,2,2-tetrafluoroethyl)-4-{4'-trans-[(E)-2- chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}benzene
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yI} - 1-(3,3,3-trifluoropropynyl)benzene
1,4-bis-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}benzene
5-{2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl} -2-(3,4- difluorophenyl)pyrimidine
5-[2-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]ethyl}-2-(4- chloro-3-fluorophenyl)pyridine
4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans- yl}phenylpropanoate
3 ,4-difluoropheny1 4'-trans-[(E)-2-chlorovinyl](1,1'- bicyclohexyl)-4-trans-carboxylate
4-trans-[(E)-2-chlorovinyl]-4'-trans-(3,5-difluorophenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-chlorovinyl]-4'-trans-(3,4,5-trifluorophenethy1)(1,1'-bicyclohexyl)
4-trans-[(E)-2-chlorovinyl]-4'-trans-(4-chloro-3,5-difluorophenethy1)(1,1'-bicyclohexyl)
4-trans-[(E)-2-chlorovinyl]-4'-trans-(4-bromo-3,5-difluorophenethyl)(1,1'-bicyclohexyl)
4'-trans-(4-trifluoromethyl-3,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-trifluoromethoxy-3,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-difluoromethoxy-3,5-difluorophenethyl)-4-trans- [(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-cyano-3,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-methyl-3,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl) 4'-trans-(4-ethyl-3,5-difluorophenethyl)-4-trans- [(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-propyl-3,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-methoxy-3,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-ethoxy-3,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans -(4-propyloxy-3,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-methoxymethy1-3 ,5-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-trifluoromethy1-2,3-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-trifluoromethoxy-2,3-difluorophenethyl)-4-trans- [(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-difluoromethoxy-2,3-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans -(4-cyano-2,3-difluorophenethyl)-4-trans -[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(2,3,4-trifluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-chloro-2,3-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-bromo-2,3-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-methyl-2,3-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-ethyl-2,3-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-propyl-2,3-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-methoxy-2,3-difluorophenethyl)-4-trans-[(E)-2-chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-ethoxy-2,3-difluorophenethyl)-4-trans-[(E)-2-chloroviny1](1,1'-bicyclohexyl) 4'-trans-(4-propyloxy-2,3-difluorophenethyl)-4-trans-[(E)-2- chlorovinyl](1,1'-bicyclohexyl)
4'-trans-(4-methoxymethyl-2,3 -difluorophenethyl)-4-trans- [(E)-2-chlorovinyl](1,1'-bicyclohexyl)
1-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}- 4-(4-trans-propylcyclohexyl)benzene, S-N 231°C, cl.p. (N-I) 385 °C
4,4'-bis-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}biphenyl
4'-trans-[(E)-2-chlorovinyl]-4"-trans-(4-fluorophenyl)- (trans-1,1':4',1"-tercyclohexane)
4'-trans-[(E)-2-chlorovinyl]-4"-trans-(4-chlorophenyl)- (trans-1,1':4',1"-tercyclohexane)
4'-trans-[(E)-2-chlorovinyl]-4"-trans-(4-bromophenyl)- (trans-1,1':4',1"-tercyclohexane)
2-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl} - 1-[4-trans-(4-trifluoromethylphenyl)cyclohexyl]ethane
5-{2-[4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl]ethyl}-2-[4-(difluoromethoxy)phenyl]pyridine
2-{4-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]phenyl}-5-(4-trans-pentylcyclohexyl)pyrimidine
4'-{4-trans-[5-trans-[(E)-2-chlorovinyl]-m-dioxane-2-yl]cyclohexyl}-4-biphenylcarbonitrile
4-{5-[2-[4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yI]ethyl]-5-pyrimidinyl} -2-fluorobenzonitrile
3-(4'-chloro-3'-fluoro-4-biphenylyloxy)-1-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl} -(E)-1-propene
trans-4-[(E)-2-chlorovinyl]-trans-4"-[(3,4-difluorobenzyl)-oxy][trans-1,1':4,,1"-tercyclohexyl], m.p. (C-S) 86.4°C, S-N 112.8°C, cl.p. (N-I) 269.4°C
trans-4-[(E)-2-chlorovinyl]-trans-4"-[(4-chloro-3-fluorobenzyI)oxy][trans-1,1':4',1"-tercyclohexyl]
trans-4-[(E)-2-chlorovinyl]-trans-4"-[(4-bromo-3-fluorobenzyl)oxy][trans-1,1':4',1"-tercyclohexyl]
4-trans-{[3-chloro-4-(trifluoromethyl)phenoxy]methyl}-1- {5-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]-m-dioxane-2-yl}cyclohexane 4'-{4-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]phenyl} -1 -[4-(difluoromethoxy)-3-methyl-4-biphenylyl]butane
4-trans-[(E)-2-chlorovinyl]-4"-trans-[(3,4-difluorophenyl)-methoxy](trans-1 ,1':4',1"-tercyclohexane)
4-trans-[(E)-2-chlorovinyl]-4"-trans-[(4-chloro-3-fluorophenyl)methoxy]-(trans-1 ,1':4', 1"-tercyclohexane)
4-trans-[(E)-2-chlorovinyl] -4"-trans-[(4-bromo-3-fluorophenyl)methoxy]-(trans-1 , 1':4', 1"-tercyclohexane)
4'-trans-{4-[4-trans-[(E)-2-chlorovinyl]cyclohexyl]phenyl } -4-trans-(5,5,5-trifluoro-1 -pentynyl)(1 , 1 '-bicyclohexyl)
4-trans-[(E)-2-chlorovinyl]cyclohexyl 4-trans-[4'-(pentafluoroethoxy)-4-biphenylyl]carboxylate
4-(4-trans-propylcyclohexyl)phenylcarboxylic acid 4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}phenyl ester
4-{2-[4'-trans-[(E)-2-chlorovinyl] [1 , 1 '-bicyclohexyl]-4-trans-yl]ethyl} -1-(pentafluorophenyl)benzene
{ 4-trans-[(E)-2-chlorovinyl] [trans-1 ,1':4',1"-tercyclo-hexane]-4"-trans-yl}pentafluorobenzoate
1-fluoro-4-{4-trans-[2-(4-trans-[(E)-2-chlorovinyl]-cyclohexyl)ethyl]cyclohexyl}benzene
1-chloro-4-{4-trans-[2-(4-trans -[(E)-2-chlorovinyl]-cyclohexyl)ethyl]cyclohexyl} benzene
1-bromo-4-{4-trans-[2-(4-trans -[(E)-2-chlorovinyl]-cyclohexyl)ethyl]cyclohexyl}benzene
1-trifluoromethyl-4- {4-trans-[2-(4-trans-[(E)-2-chlorovinyl]cyclohexyl)ethyl]cyclohexyl}benzene
1 -trifluoromethoxy-4-{4-trans-[2-(4-trans-[(E)-2-chlorovinyl]cyclohexyl)ethyl]cyclohexyl} benzene
1 -difluoromethoxy-4- {4-trans-[2-(4-trans-[(E)-2-chlorovinyl]cyclohexyl)ethyl]cyclohexyl} benzene
4-{4-trans-[2-(4-trans-[(E)-2-chlorovinyl]cyclohexyl)-ethyl]cyclohexyl}benzonitrile
4-{4-trans-[2-(4-trans-[(E)-2-chlorovinyl]cyclohexyl)-ethyl]cyclohexyl}toluene
1-ethyl-4-{4-trans-[2-(4-trans-[(E)-2-chlorovinyl]-cyclohexyl)ethyl]cyclohexyl} benzene 1-propyl-4-[4-trans-[2-(4-trans-[(E)-2-chlorovinyl]- cyclohexyl)ethyl]cyclohexyl}benzene
1-methoxy-4-{4-trans-[2-(4-trans-[(E)-2-chlorovinyl]- cyclohexyl)ethyl]cyclohexyl}benzene
1-ethoxy-4-{4-trans-[2-(4-trans-[(E)-2-chlorovinyl]- cyclohexyl)ethyl]cyclohexyl}benzene
1-propyloxy-4-{4-trans-[2-(4-trans-[(E)-2-chlorovinyl]- cyclohexyl)ethyl]cyclohexyl}benzene
1-methoxymethyl-4-{4-trans-[2-(4-trans-[(E)-2- chlorovinyl]cyclohexyl)ethyl]cyclohexyl}benzene.
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p-toluyl- m-dioxane, m.p. (C-N) 132.9°C, cl.p. (N-I) 187.5°C;
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p- ethylphenyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p- propylphenyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p- butylphenyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p- pentylphenyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p- methoxyphenyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p- ethoxyphenyl-m-dioxane
2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p-propyloxyphenyl-m-dioxane
2-trans- {4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p-methoxymethylphenyl-m-dioxane 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p-toluyl-pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p-ethylphenylpyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p-propylphenylpyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyI}-5-p-butylphenylpyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl } -5-p-pentylphenylpyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-p-methoxyphenyl-pyrimidine; 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl } -5-p-ethoxyphenylpyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl } -5-p-propyloxyphenyl-pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-p-methoxymethylphenyl-pyrimidine;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(5-methylpyrimidine)benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(5-ethylpyrimidine)benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-4-(5-propylpyrimidine)benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(5-butylpyrimidine)benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(5-pentylpyrimidine)benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(5-methoxypyrimidine)benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(5-ethoxypyrimidine)benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(5-propyloxypyrimidine)benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(5-methoxymethylpyrimidine)benzene;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl } -5-(4-trans-ethylcyclohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-propylcyclohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-butylcyclohexyl)pyrimidine, m.p. (S-N) 150.7°C, cl.p. (N-I) 211.2°C;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-pentylcyclohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-methoxycyclohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-ethoxycyclohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-propyloxycyclohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-methoxymethylcyclohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-vinylcyclohexyl)pyrimidine; 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-(4-trans-(1E- propenyl)cycIohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-(3- butenyl)cyclohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-(3E- pentenyl)cycIohexyl)pyrimidine;
2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-(4-trans-(4- pentenyl)cyclohexyl)pyrimidine;
2-trans-{4'-trans-[(E)-2-chlorovinyl] [1,1'-bicyclohexyl]-4- trans-yl} -5-ethyl-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl] [1,1'-bicyclohexyl]-4- trans-yl} -5-propyl-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl} -5╌butyl-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl] [1,1'-bicyclohexyl]-4- trans-yl}-5-pentyl-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1 ,1'-bicyclohexyl]-4- trans-yl} -5-methoxy-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}-5-ethoxy-m-dioxane;
2-trans- {4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-5-propyloxy-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-5-methoxymethyl-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-5-vinyl-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-5-(1E-propenyl)-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-5-(3-butenyl)-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-5-(3E-pentenyl)-m-dioxane;
2-trans-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4-trans-yl}-5-(4-pentenyl)-m-dioxane;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-[[5-trans-ethyl][2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-{[5-trans-propyl][2-yl]-m-dioxane}benzene;
1-trans-{4'-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-{[5-trans-butyl][2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-{ [5-trans-pentyl][2-yl]-m-dioxane} benzene; 1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4- { [5-trans-methoxy] [2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl } -4- { [5-trans-ethoxy] [2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-{ [5-trans-propyloxy] [2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4- { [5-trans-methoxymethyl] [2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-{ [5-trans-vinyl][2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-{ [5-trans -(1E-propenyl)][2-yl]-m-dioxane} benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4-{ [5-trans-(3-butenyl)] [2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4- { [5-trans-(3E-pentenyl)] [2-yl]-m-dioxane}benzene;
1-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -4- { [5-trans-(4-pentenyl)][2-yl]-m-dioxane} benzene; Example 2
2.25 g of bromomethyltriphosphonium bromide were suspended in 10 ml of abs. tetrahydrofuran in a sulphonation flask while gassing with nitrogen and the suspension was cooled to -20°C and treated with 0.61 g of potassium tert.-butylate.
After stirring at -20°C for 20 minutes a solution of 1 g of 4-[4'-trans-(1,1'-bicyclohexylcarboxaldehyde)-4-trans-yl]toluene in 10 ml of abs. tetrahydrofuran was added dropwise. The
suspension was stirred at -20°C for a further 40 minutes, thereafter poured into 80 ml of ice-cooled hexane and the colourless suspension was stirred at 0°C for 30 minutes. The suspension was suction filtered and the filtrate was evaporated. The residue (2.02 g) was purified by chromatography on silica gel with hexane and subsequently recrystallized from hexane to give 0.1 g of 4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}toluene, m.p. S-N 122.4°C, cl.p. (N-I) 231.9°C.
The following compounds can be manufactured in an analogous manner:
1 -fluoro-4- {4'-trans-[(E)-2-bromovinyl] [1 ,1 '-bicyclohexyl]- 4-trans-yl}-benzene 1-chloro-4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]- 4-trans-yl}-benzene
1-bromo-4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4- trans-yl}benzene, m.p. (C-N) 207.0°C, cl.p. (N-I) 267.8°C
1-cyano-4-{4'-trans-[(E)-2-bromovinyl] [1,1'-bicyclohexyl]-4- trans-yl} -benzene
1-tifluoromethyl-4-{4'-trans-[(E)-2-bromovinyl] [1,1'- bicyclohexyl]-4-trans-yl} -benzene
1-trifluoromethoxy-4-{4'-trans-[(E)-2-bromovinyl] [1,1'- bicyclohexyl]-4-trans-yl}-benzene
1-difluoromethoxy-4-{4'-trans-[(E)-2-bromovinyl][1, 1'- bicyclohexyl]-4-trans-yl} -benzene
1-ethyl-4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4- trans-yl}-benzene
1-propyl-4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4- trans-yl}-benzene
1-butyl-4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl} -benzene
1-penetyl-4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-benzene
1-methoxy-4-{4'-trans-[(E)-2-bromovinyl] [1,1'-bicyclohexyl]-4-trans-yl} -benzene
1-ethoxy-4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-benzene
1-propyloxy-4-{4'-trans-[(E)-2-bromovinyl] [1,1'-bicyclohexyl]-4-trans-yl} -benzene
1-methoxymethyl-4-{4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl} -benzene
1-{4-trans-[(E)-2-bromovinyl]cyclohexyl}-4-ethylbenzene 4-trans-[(E)-2-bromovinyl]-4'-trans-cyclohexyl(1,1'-bicyclohexyl)
2-{4-trans-[(E)-2-bromovinyl]cyclohexyl}-5-[(E)-3-pentenyl]pyridine
4-{2-[4-trans-[(E)-2-bromovinyl]cyclohexyl]ethyl} -3-fluoro- 1-butylbenzene
2-{4-trans-[(E)-2-bromovinyl]cyclohexyl}-1 -[4-(5,5,5-trifluoropentyl)phenyl]ethyne 4-trans-{2-[4-trans-[(E)-2-bromovinyl]cyclohexyl]ethyl}-1-(3,4,5-trifluorophenyl)cyclohexane
4'-{2-[4-trans-[(E)-2-bromovinyl]cyclohexyl]ethyl}-4-biphenylcarbonitrile
3- {4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}- 1-{4-[(E)-4-pentenyl]phenoxy}propane
4-{2-[4-trans-[(E)-2-bromovinyl]cyclohexyl]ethyl}-2,3',3"-trifluoro-4"-methyl-p-terphenyl
5-{4-[4-trans-[(E)-2-bromovinyl]cyclohexyl]-(E)-3-butenyl}-2-(2,3,5,6-tetrafluoro-4-trifluoromethoxy-4'-biphenylyl)-pyridine 4- {4'-trans-[(E)-2-bromovinyl][1,1'-bicyclohexyl][4-trans-yl]}phenylcarboxylic acid 4-cyano-3-fluorophenyl ester.
1,2-difluoro-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-benzene
1-chloro-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]- 4-trans-yl}-2-fluorobenzene
1-bromo-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene
1 -cyano-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene
1-trifluoromethyl-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexy1]-4-trans-yl}-2-fluorobenzene
1-trifluoromethoxy-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene
1 -difluoromethoxy-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene
1-methyl-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene
1-ethyl-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4¬trans-yl}-2-fluorobenzene
1 -propyl-4-(4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene
1-butyl-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene
1-pentyl-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]- 4-trans-yl}-2-fluorobenzene
1-methoxy-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]-4-trans-yl}-2-fluorobenzene 1 -ethoxy-4-{4'-trans-[{(E)-2-bromovinyl][1,1'-bicyclohexyl]- 4-trans-yl}-2-fluorobenzene
1-propyloxy-4-{4'-trans-[{(E)-2-bromovinyl] [1, 1'- bicyclohexyl]-4-trans-yl} -2-fluorobenzene
1-methoxymethy1-4-{4'-trans-[{(E)-2-bromovinyl][1,1'- bicyclohexyl]-4-trans-yl} -2-fluorobenzene
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-fluorophenethyl)- (1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-chlorophenethyI)- (1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-bromophenethyl)- (1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-cyanophenethyl)- (1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-trifluoromethylphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-trifluoromethoxyphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-difluoromethoxyphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-methylphenethyl)- (1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-ethylphenethyl)-(1,1'-bicyclohexyl)
4-trans -[(E)-2-bromovinyl]-4'-trans-(4-propylphenethyl)- (1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-butylphenethyl)-(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans -(4-pentylphenethyl)-(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-methoxyphenethyl)-(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-ethoxyphenethyl)-(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-propyloxyphenethy1)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans-(4-(methoxymethyl)-phenethyl)(1,1'-bicyclohexyl) 4-trans-[(E)-2-bromovinyl]-4'-trans- 3,4-difluorophenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-chlorophenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-bromophenethyl)(1,1'-bicyclohexyl)
4-trans -[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-cyanophenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-trifluoromethylphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans - 3-fluoro-4-trifluoromethoxyphenethyl)(l ,l'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-difluoromethoxyphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-methylphenethy1)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-ethylphenethyl)(1,1'-bicyclohexyl)
4-trans -[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-propylphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-butylphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans - 3-fluoro-4-pentylphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-methoxyphenethyl)(1,1'-bicyclohexyl)
4-trans -[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-ethoxyphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-propyloxyphenethyl)(1,1'-bicyclohexyl)
4-trans-[(E)-2-bromovinyl]-4'-trans- 3-fluoro-4-(methoxymethyl)phenethyl)(1,1'-bicyclohexyl)
Example 3
1.40 g of chloromethyl-triphenylphosphonium chloride were suspended in 10 ml of abs. tetrahydrofuran in a
sulphonation flask while gassing with nitrogen, cooled to -20° C and treated with 0.48 g of potassium tert.-butylate. After stirring at -20°C for 30 minutes a solution of 1 g of 4-trans-(4chlorophenethyl)-4'-trans-(1,1'-bicyclohexylpropionaldehye) in 10 ml of abs. tetrahydrofuran was added dropwise to the yellow suspension. The suspension was stirred at -20° C for 40 minutes, poured into 60 ml of ice-cooled hexane, stirred at 0°C for
30 minutes, and filtered; there were isolated from the filtrate 1.368 g of product which was purified firstly by chromatography on silica gel with hexane and then by crystallization from
methylene chloride/ methanol: 0.23 g of 4'-trans-[(E)-4-chloro- 3-butenyl]-4-trans-(4-chlorophenethyl)(1,1'-bicylohexyl), m.p. (C- N) 98.1°C, cl.p. (N-I) 185.4ºC.
The following compounds can be manufactured in an analogous manner:
4-{4-trans-[(E)-4-chloro-3-butenyl]cyclohexyl} toluene
1-[(E)-4-chloro-3-butenyl]-2,3-difluoro-4-(4-trans-heptylcyclohexyl)benzene
4-[(E)-4-chloro-3-butenyl]-3,2'-difluoro-4'-octylbiphenyl 1-[4-trans-(1-butynyl)cyclohexyl]-4-[(E)-4-chloro-3-butenyl]benzene
2-trans-{4-trans-[(E)-4-chloro-3-butenyl]cyclohexyl}-5-(4-pentenyl)-m-dioxane
4-{4-trans-[(E)-4-chloro-3-butenyl]cyclohexyl} -2,6-difluoro- 1-pentylbenzene
2-chloro-4-{4-[(E)-4-chloro-3-butenyl]phenethyl} -1 -heptylbenzene
4-[(E)-4-chloro-3-butenyl]-2,3-difluoro-1-(4-trans-octylcyclohexyl)benzene
4-{4'-trans-[(E)-4-chloro-3-butenyl][1,1'-bicyclohexyl]-4-trans-yl}-1-fluorobenzene, m.p. (C-N) 82.9°C, cl.p. (N-I) 183.0°C
4-{4'-trans-[(E)-4-chloro-3-butenyl][1,1'-bicyclohexyl]-4-trans-yl} -1-chlorobenzene
4-{4'-trans-[(E)-4-chloro-3-butenyl][1,1'-bicyclohexyl]-4-trans-yl}-1-bromobenzene 4-{4'-trans-[(E)-4-chloro-3-butenyl][1,1'-bicyclohexyl]-4-trans-yl}-1-methylbenzene, m.p. (C-S) 69.2°C, S-N 76.0°C, cl.p. (N-I) 210.8°C
2-{4-[(E)-4-chloro-3-butenyl]phenyl}-5-[2-(4-trans-hexylcyclohexyl)ethyl]pyrimidine
4-{2-[4'-trans-[(E)-4-chloro-3-butenyl][1,1'-bicyclohexyl]-4-trans-yl]ethyl}-2,6-difluorobenzonitrile
4-[(E)-4-chloro-3-butenyl]-3,2'-difluoro-4'-[4-trans-(3-heptynyl)cyclohexyl]biphenyl
2-trans-{4-trans-[(E)-4-chloro-3-butenyl]cyclohexyl}-5-{4-trans-[(E)-2-butenyloxy]cyclohexyl}-m-dioxane
1-trans-{4-[(E)-4-chloro-3-butenyl]phenyl}-4-[4-(3,4-dichlorophenyl)butyl]cyclohexane
4-chloro-4'-{4'-trans-[(E)-4-chloro-3-butenyl][1,1'-bicyclohexyl]-4-trans-yl}biphenyl
4-bromo-4'-{4'-trans-[(E)-4-chloro-3-butenyl][1,1'-bicyclohexyl]-4-trans-yl}biphenyl
4'-trans-{[4-[(E)-4-chloro-3-butenyl]phenoxy]methyl}-4-trans-[4-(trifluoromethoxy)phenyl](1,1'-bicyclohexyl)
4-{4-trans-[(E)-3-chloro-2-propenyloxy]cyclohexyl}toluene 1-[(E)-3-chloro-2-propenyloxy]-2,3-difluoro-4-(4-trans-heptylcyclohexyl)benzene
4-[(E)-3-chloro-2-propenyloxy]-3,2'-difluoro-4'-octylbiphenyl
1-[4-trans-(1-butynyl)cyclohexyl]-4-[(E)-3-chloro-2- propenyloxy]benzene
2-trans-{4-trans-[(E)-3-chloro-2-propenyloxy]cyclohexyl}-5-(4-pentenyl)-m-dioxane
4-{4-trans-[(E)-3-chloro-2-propenyloxy]cyclohexyl}-2,6-difluoro-1-pentylbenzene
2-chloro-4-{4-[(E)-3-chloro-2-propenyloxy]phenethyl}-1-heptylbenzene
4-[(E)-3-chloro-2-propenyloxy]-2,3-difluoro-1-(4-trans-octylcyclohexyl)benzene
4-{4'-trans-[(E)-3-chloro-2-propenyloxy][1,1'-bicyclohexyl]- 4-trans-yl}-1-fluorobenzene, m.p. (C-N) 83.7°C, cl.p. (N-I) 142.3°C 4-{4'-trans-[(E)-3-chloro-2-propenyloxy][1,1'-bicyclohexyl]- 4-trans-yl}-1-chlorobenzene
4-{4'-trans-[(E)-3-chloro-2-propenyloxy][1,1'-bicyclohexyl]-4- trans-yl}-1-bromobenzene
4-{4'-trans-[(E)-3-chloro-2-propenyloxy][1,1'-bicyclohexyl]- 4-trans-yl} -1-methylbenzene
2-{4-[(E)-3-chloro-2-propenyloxy]phenyl} -5-[2-(4-trans- hexylcyclohexyl)ethyl]pyrimidine
4-{2-[4'-trans-[(E)-3-chloro-2-propenyloxy][1,1'-bicyclo- hexyl]-4-trans-yl]ethyl} -2,6-difluorobenzonitrile
4-[(E)-3-chloro-2-propenyloxy]-3,2'-difluoro-4'-[4-trans-(3- heptynyl)cyclohexyl]biphenyl
2-trans-{4-trans-[(E)-3-chloro-2-propenyloxy]cyclohexyl} -5- {4-trans-[(E)-2-butenyloxy]cyclohexyl}-m-dioxane
1-trans-{4-[(E)-3-chloro-2-propenyloxy]phenyl} -4-[4-(3,4-dichlorophenyl)butyl]cyclohexane
4-chloro-4'-{4'-trans-[(E)-3-chloro-2-propenyloxy][1,1'-bicyclohexyl]-4-trans-yl}biphenyl
4-bromo-4'-{4'-trans-[(E)-3-chloro-2-propenyloxy] [1,1'-bicyclohexyl]-4-trans-yl}biphenyl
4'-trans-{ [4-[(E)-3-chloro-2-propenyloxy]phenoxy]methyl] -4-trans-[4-(trifluoromethoxy)phenyl](1,1'-bicyclohexyl).
Example 4
Binary mixtures (BM) with 4-(trans-4-pentylcyclohexyl)-benzonitrile were prepared in order to investigate the properties of the compounds of formula I in mixtures. The threshold
potential and the response times were measured at 22°C in a TN cell (low bias tilt) having a plate separation of 8 mm; the 2.5-fold value of the threshold potential (V10) was chosen as the operating voltage. The corresponding data for 4-(trans-4-pentylcyclohexyl)benzonitrile are: cl.p. (N-I) 54.6°C, V10 = 1.62V, ton = 22 ms, toff = 42 ms, Δn= 0.120. BM-1
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1-chloro-4- {2-[4-trans-((E)-2-chlorovinyl)- cyclohexyl]ethyl}benzene
cl.p. (N-I) = 50.8°C, V10 = 1.56V, ton = 24 ms, toff = 42 ms, Δn 0.122;
BM-2
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 1 -chloro-4- {2-[4-trans-((E)-2-chlorvinyl)- cyclohexyl]ethyl} benzene
cl.p. (N-I) = 46.5°C, V10 = 1.61V, ton = 28 ms, toff = 43 ms, Δn 0.122;
BM-3
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1-chloro-2-fluoro-4-{4-trans-[(E)-2-chlorvinyl]- cyclohexyl}benzene
cl.p. (N-I) = 47.7°C, V10 = 1.56V, ton = 38 ms, toff = 48 ms, Δn 0.120; BM-4
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 1-chloro-2-fluoro-4-{4-trans-[(E)-2-chlorvinyl]- cyclohexyl}benzene
cl.p. (N-I) = 399°C, Δn = 0.116;
BM-5
90 wt.% of 4-(trans -4-pentylcyclohexyl)benzonitrile
10 wt.% of 4'-trans-(4-chloro-3-fluorophenethyl)-4-trans-[(E)-2- chlorvinyl](1,1'-bicyclohexyl) cl.p. (N-I) = 62.2°C, V10 = 1.65V, ton = 31 ms, toff = 50 ms, Δn = 0.126.
BM-6
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 4'-trans-(4-chloro-3-fluorophenethyl)-4-trans-[(E)-2- chlorvinyl](1,1'-bicyclohexyl)
cl.p. (N-I) = 71.2°C, V10 = 1.83V, ton = 32 ms, toff = 49 ms, Δn = 0.129.
BM-7
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1,2-difluoro-4-{4'-trans-[(E)-2-chlorvinyl][1,1'- bicyclohexyl]-4-trans-yl}benzene
cl.p. (N-I) = 60.7°C, V10 = 1.54V, ton = 28 ms, toff = 47 ms, Δn = 0.120. BM-8
80 wt.% of 4-(trans -4-pentylcyclohexyl)benzonitrile
20 wt.% of 1,2-difluoro-4-{4'-trans-[(E)-2-chlorvinyl][1,1'- bicyclohexyl]-4-trans-yl}benzene
cl.p. (N-I) = 66.7°C, V10 = 1.62V, ton = 33 ms, toff = 50 ms, Δn = 0.123.
BM-9 90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 2-fluoro-4-{4'-trans-[(E)-2-chlorvinyl][1,1'- bicyclohexyl]-4-trans-yl}toluene
cl.p. (N-I) = 63.2°C, V10 = 1.68V, ton = 26 ms, toff = 45 ms, Δn = 0.124. BM-10
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 2-fluoro-4-{4'-trans-[(E)-2-chlorvinyl] [1 ,1'- bicyclohexyl]-4-trans-yl} toluene
cl.p. (N-I) = 72.3°C, V10 = 1.7V, ton = 27 ms, toff = 45 ms, Δn = 0.127.
BM-1 1
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 4'-trans-[(E)-4-chloro-3-butenyl]-4-trans-(4- chlorophenethyl)(1 , 1'-bicyclohexyl)
cl.p. (N-I) = 64.4°C, V10 = 1.83V, ton = 24 ms, toff = 40 ms, Δn 0.124.
BM-12
80 wt.% of 4-(trans -4-pentylcyclohexyl)benzonitrile
20 wt.% of 4'-trans-[(E)-4-chloro-3-butenyl]-4-trans-(4- chlorophenethyl)(1,1'-bicyclohexyl)
cl.p. (N-I) = 74.8°C, V10 = 2.03V, ton = 26 ms, toff = 41 ms, Δn 0.126. BM-13
90 wt.% of 4-(trans -4-pentylcyclohexyl)benzonitrile
10 wt.% of 4-trans-[(E)-2-chlorovinyl]-4'-trans-(4- fluorophenethyl)(1,1'-bicyclohexyl)
cl.p. (N-I) = 62.6°C, V10 = 1.74V, ton = 25 ms, toff = 41 ms, Δn 0.121.
BM-14 80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 4-trans-[(E)-2-chlorovinyl]-4'-trans-(4-fluorophenethyl)(1 ,1'-bicyclohexyl) cl.p. (N-I) = 71.1°C, V10 = 1.73V, ton = 28 ms, toff = 42 ms, Δn = 0.121.
BM-15
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 4-chloro-3-fluoro-4'-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1,1'-biphenyl
cl.p. (N-I) = 61.1°C, V10 = 1.64V, ton = 31 ms, toff = 46 ms.
BM-16
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 4-chloro-3-fluoro-4'-{4-trans-[(E)-2-chlorvinyl]- cyclohexyl} -1,1'-biphenyl
cl.p. (N-I) = 69.4°C, V10 = 1.75V, ton = 30 ms, toff = 53 ms.
BM-17 90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1-chloro-2-fluoro-4'-{4-trans-[(E)-2-chlorvinyl]-[1,1'- bicyclohexy1}-4-trans-yl}benzene
cl.p. (N-I) = 62.9°C, V10 = 1.70V, ton = 26 ms, toff = 43 ms, Δn = 0.125.
BM-18
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 1-chloro-2-fluoro-4'-{4-trans-[(E)-2-chlorvinyl]-[1 , 1 '- bicyclohexyl} -4-trans-yl} benzene
cl.p. (N-I) = 72.4°C, V10 = 1.70V, ton = 31 ms, toff = 48 ms, Δn = 0.131.
BM-19
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile 10 wt.% of 4-{4'-trans-[(E)-2-bromovinyl] [ 1 , 1'-bicyclohexyl]-4- trans-yl }toluene
cl.p. (N-I) = 64.1°C, V10 = 1.61V, ton = 30 ms, toff = 46 ms, Δn =
0.128.
BM-20
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 4-{4'-trans-[(E)-2-bromovinyl] [1, 1 ' -bicyclohexyl]-4- trans-yl} toluene
cl.p. (N-I) = 73.2°C, V10 = 1.79V, ton = 31 ms, toff = 48 ms, Δn = 0.130.
BM-21
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1-{trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(4-trans- propylcyclohexyl)benzene
cl.p. (N-I) = 62.3°C, V10 = 1.67V, ton = 26 ms, toff = 43 ms, Δn = 0.124.
BM-22
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 1-{trans-[(E)-2-chlorovinyl]cyclohexyl} -4-(4-trans- propylcyclohexyl)benzene
cl.p. (N-I) = 72.2°C, V10 = 1.77V, ton = 31 ms, toff = 46 ms, Δn = 0.124. BM-23
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1 -chloro-4-{4'-trans-[(E)-2-chlorvinyl] [1,1 '- bicyclohexyl]-4-trans-yl} benzene
cl.p. (N-I) = 57.1°C, V10 = 1.62V, ton = 30 ms, toff = 44 ms, Δn = 0.125. BM-24
80 wt.% of 4-(trans -4-pentylcyclohexyl)benzonitrile
20 wt.% of 1-chloro-4-{4'-trans-[(E)-2-chlorvinyl] [1,1'- bicyclohexyl]-4-trans-yl}benzene
cl.p. (N-I) = 58.8°C, V10 = 1.68V, ton = 29 ms, toff = 45 ms.
BM-25 90 wt.% of 4-(trans -4-pentylcyclohexyl)benzonitrile
10 wt.% of 4-{4'-trans-[(E)-2-chlorovinyl] [1,1'-bicyclohexyl]-4- trans-yl}toluene
cl.p. (N-I) = 65.8°C, V10 = 1.79V, ton = 22 ms, toff = 37 ms, Δn =
0.124.
BM-26
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}toluene
cl.p. (N-I) = 77.8°C, V10 = 1.81V, ton = 27 ms, toff = 44 ms.
BM-27 90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 4-chloro-4'-{4-trans-[(E)-2-chlorvinyl]- cyclohexyl}biphenyl
cl.p. (N-I) = 65.7°C, V10 = 1.77V, ton = 25 ms, toff = 42 ms, Δn =
0.123.
BM-28
80 wt.% of 4-(trans -4-pentylcyclohexyl)benzonitrile
20 wt.% of 4-chloro-4'-{4-trans-[(E)-2-chlorvinyl]- cyclohexyl}biphenyl
cl.p. (N-I) = 74.6°C, V10 = 1.79V, ton = 28 ms, toff = 41 ms, Δn = 0.125. BM-29
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1-{4'-trans-[(E)-2-chlorovinyl] [1,1'-bicyclohexyl]-4- trans-yl } -4-(4-trans-propylcyclohexyl)benzene cl.p. (N-I) = 63.4°C, V10 = 1.74V, ton = 25 ms, toff = 40 ms, Δn = 1.24. BM-30
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 1 -{4'-trans-[(E)-2-chlorovinyl] [1, 1 '-bicyclohexyl]-4- trans-yl} -4-(4-trans -propylcyclohexyl)benzene cl.p. (N-I) = 67.4°C, V10 = 1.77 V, ton = 27 ms, toff = 44 ms, Δn = 0.125.
BM-31 90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1-fluoro-4-{4'-trans-[(E)-2-chlorvinyl][ 1 ,1'- bicyclohexyl]-4-trans-yl} benzene
cl.p. (N-I) = 63.2°C, V10 = 1.73V, ton = 24 ms, toff = 38 ms. BM-32
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 1-fluoro-4- {4'-trans-[(E)-2-chlorvinyl] [ 1 ,1 '- bicyclohexyl]-4-trans-yl} benzene
cl.p. (N-I) = 73.2°C, V10 = 1.86V, ton = 25 ms, toff = 40 ms.
BM-33
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1-fluoro-4-{4'-trans-[(E)-4-chlor-3-butenyl] [1 , 1'- bicyclohexyl]-4-trans-yl} benzene cl.p. (N-I) = 62.5°C, V10 = 1.78 V, ton = 24 ms, toff = 40 ms, Δn = 0.122.
BM-34
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 1-fluoro-4-{4'-trans-[(E)-4-chloro-3-butenyl] [1,1'- bicyclohexyl]-4-trans-yl}benzene
cl.p. (N-I) = 72.1°C, V10 = 1.94V, ton = 24 ms, toff = 40 ms.
BM-35
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 1-chloro-4-{4-trans-[(E)-2-chlorvinyl] - cyclohexyl]benzene
cl.p. (N-I) = 51 °C, V10 = 1.51V, ton = 26 ms, toff = 43 ms, Δn = 0.124.
BM-36
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 1-chloro-4-{4-trans-[(E)-2-chlorvinyl]- cyclohexyl]benzene
cl.p. (N-I) = 47°C, V10 = 1.61V, ton = 27 ms, toff = 43 ms, Δn = 0.125.
BM-37
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}benzonitrile
cl.p. (N-I) = 70.4°C, V10 = 1.83V, ton = 26 ms, toff = 41 ms, Δn = 0.133. BM-38
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile 20 wt.% of 4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}benzonitrile
cl.p. (N-I) = 86.6°C, V10 = 1.94V, ton = 36 ms, toff = 51 ms, Δn =
0.140.
BM-39
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}-1-methoxybenzene
cl.p. (N-I) = 67.8°C, V10 = 1.77V, ton = 24 ms, toff = 40 ms, Δn = 0.128.
BM-40
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}-1-methoxybenzene
cl.p. (N-I) = 82.5°C, V10 = 1.92V, ton = 27 ms, toff = 43 ms, Δn = 0.132.
BM-41
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}-1-(trifluoromethoxy)benzene
cl.p. (N-I) = 60.7°C, V10 = 1.53V, ton = 29 ms, toff = 47 ms, Δn = 0.124. BM-42
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 4-{4'-trans-[(E)-2-chlorovinyl][1,1'-bicyclohexyl]-4- trans-yl}-1-(trifluoromethoxy)benzene
cl.p. (N-I) = 67.7°C, V10 = 1.67V, ton = 31 ms, toff = 47 ms, Δn = 0.124. BM-43
90 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt.% of 4-[4-trans-[(E)-2-chlorovinyl]cyclohexyl}-1- (trifluoromethoxy)benzene
cl.p. (N-I) = 46.9°C, V10 = 1.43V, ton = 28 ms, toff = 46 ms, Δn = 0.118.
BM-44
80 wt.% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt.% of 4-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -1 - (trifluoromethoxy)benzene
cl.p. (N-I) = 37.4°C, V10 = 1.25V, ton = 33 ms, toff = 53 ms, Δn = 0.109.
BM-45
90 wt% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt% of 1-bromo-4-{4'-trans-[(E)-2-chlorovinyl][1,1'- bicyclohexyl]-4-trans-yl}benzene
cl.p. (N-I) 65.4°C, V10 = 1.81V, ton = 27 ms, toff = 43 ms, Δn =
0.127.
BM-46
80 wt% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt% of 1-bromo-4-{4'-trans-[(E)-2-chlorovinyl] [1 , 1'- bicyclohexyl]-4-trans-yI}benzene
cl.p. (N-I) 77.4°C, Δn = 0.130. BM-47
90 wt% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt% of 4'-trans-(4-bromophenethyl)-4-trans -[(E)-2- chlorovinyl](1,1'-bicyclohexyl) cl.p. (N-I) 63.2°C, V10 = 1.80 V, ton = 25 ms, toff = 39 ms, Δn = 0.124.
BM-48 80 wt% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt% of 4'-trans-(4-bromophenethyl)-4-trans-[(E)-2- chlorovinyl](1,1'-bicyclohexyl)
cl.p. (N-I) 72.1°C, V10 = 1.81 V, ton = 31 ms, t0ff = 45 ms, Δn =
0.125.
BM-49
90 wt% of 4-(trans-4-pentylcyclohexyl)benzonitrile
10 wt% of 1-bromo-4-{4'-trans-[(E)-2-bromovinyl][1,1'- bicyclohexyl]-4-trans-yl}benzene
cl.p. (N-I) 62.8°C, V10 = 1.59 V, ton = 29 ms, toff = 46 ms.
BM-50
80 wt% of 4-(trans-4-pentylcyclohexyl)benzonitrile
20 wt% of 1-bromor4-{4'-trans-[(E)-2-bromovinyl][1,1'- bicyclohexyl]-4-trans-yl}benzene
cl.p. (N-I) 73.3°C.
BM-51
90 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
10 wt% 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-(4-trans- butylcyclohexyl)-pyrimidine
cl.p. (N-I) 60.8°C, V10 = 1.52 V, ton = 29 ms, toff = 45 ms, Δn = 0,122 BM-52
80 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
20 wt% 2-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-(4-trans- butylcyclohexyl)-pyrimidine cl.p. (N-I) 70.9°%, V10 = 1.54 V, ton = 37 ms, toff = 58 ms, Δn = 0, 122
BM-53
90 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
10 wt% 2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-p-tolyl- m-dioxane
cl.p. (N-I) 59.5°%, V10 = 1.56 V, ton = 28 ms, toff = 45 ms, Δn = 0,124
BM-54
80 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
20 wt% 2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl}-5-p-tolyl- m-dioxane
cl.p. (N-I) 65.5°C, V10 = 1.46 V, ton = 38 ms, toff = 57 ms, Δn = 0, 125 BM-55
90 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
10 wt% 2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-propyl- m-dioxane
cl.p. (N-I), 50.7°C, V10 = 1.45 V, ton = 26 ms, toff = 46 ms, Δn = 0, 116
BM-56 80 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
20 wt% 2-trans-{4-trans-[(E)-2-chlorovinyl]cyclohexyl} -5-propyl- m-dioxane
cl.p. (N-I), 48.0°C, V10 = 1.30 V, ton = 31 ms, toff = 52 ms, Δn =
0, 110 BM-57
90 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
10 wt% 4'-trans-[(E)-2-chlorovinyl]-4-trans-propyl-(1 ,1- bicyclohexyl)
cl.p. (N-I), 55.3°C, V10 =1.57 V, ton = 23 ms, toff = 44 ms, Δn = 0, 1 18
BM-58
80 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
20 wt% 4'-trans-[(E)-2-chlorovinyl]-4-trans-propyl-(1, 1 '- bicyclohexyl)
cl.p. (N-I), 57.7°C, V10 =1.60 V, ton = 25 ms, toff = 44 ms, Δn = 0, 1 14
BM-59
90 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
10 wt% 4'-trans-[(E)-2-chlorovinyl]-4-trans-(1E-propenyl)(1 ,1'- bicyclohexyl)
cl.p. (N-I) 58.9°C, V10 = 1.65 V, ton = 24 ms, toff = 40 ms, Δn = 0, 122 BM-60
80 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
20 wt% 4-trans-[(E)-2-chlorovinyl]-4-trans-(1E-propenyl)(1 ,1'- bicyclohexyl)
cl.p. (N-I) 63.7°C, V10 = 1.63 V, ton =24 ms, toff = 37 ms, Δn = 0, 122 BM-61
90 wt% 4-(trans-4-pentylcyclohexyl)bezonitrile
10 wt% 4'-trans-[(E)-2-chlorovinyl]-4-trans-methoxymethyl-(1,1'- bicyclohexyl)
cl.p. (N-I) 54.9°C, V10 = 1.45 V, ton = 42 ms, toff = 59 ms, Δn = 0,118
BM-62
80 wt% 4-(trans-4-pentylcyclohexyl)bezonitriIe
20 wt% 4'-trans-[(E)-2-chlorovinyl]-4-trans-methoxymethyl-(1,1 '- bicyclohexyl)
cl.p. (N-I) 54.7°C, V10 = 1.48 V, ton = 42 ms, toff = 62 ms, Δn = 0,113

Claims

Claims
1. Compounds of the general formula
Figure imgf000069_0001
wherein
R signifies hydrogen, halogen, cyano, isothiocyanato, or alkyl, alkenyl or alkynyl with 1 to 15 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one or more non-adjacent -CH2- groups can be replaced by -O-, -S-, -CO-, -COO- and/or -OOC-;
Q represents alkylene with 2 to 10 carbon atoms,
which is unsubstituted or substituted with at least one fluorine and in which one -CH2- group can be replaced by -O-, -S-, -COO- or -OOC-, or -CH2-, -CF2-, -CHF- or a single covalent bond;
A1,A2, A3 each independently signify 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which, when it is unsubstituted, one or more -CH- groups can be replaced by nitrogen, or unsubstituted or cyano- or fluoro-substituted trans-1,4-cyclohexylene, or 1 ,4cyclohexenylene, trans-1,3-dioxane-2,5-diyl or trans- 1 ,3-dithiane-2,5-diyl;
A4 represents unsubstituted or cyano- or fluoro- substituted trans- 1,4-cyclohexylene, or 1 ,4- cyclohexenylene, trans-1,3-dioxane-2,5-diyl, trans- 1,3-dithiane-2,5-diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and/or methyl and in which when it is unsubstituted, one or more -CH- groups can be replaced by nitrogen;
X1 represents bromine or chlorine; Z1,Z2, Z3 each independently denote a single covalent bond,
-CH2O-, -OCH2-, -CH2CH2-, -COO-, -OOC-, -C≡C-, -(CH2)4-, -(CH2)3O-, -O(CH2)3-, the trans form of -CH=CH-,
-CH=CHCH2O-, -OCH2CH=CH-, -CH=CH(CH2)2- or
-(CH2)2CH=CH-;
n, p each independently signify 0 or 1;
R2, R3 each independently represent hydrogen or fluorine.
2. Compounds according to claim 1 of the general formula
Figure imgf000070_0001
wherein
A1, A2, A3 each independently represent 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen and/or cyano, or pyridine-2,5-diyl pyrimidine-2,5-diyl, trans-1,4-cyclohexylene or trans- 1,3-dioxane-2,5-diyl;
A4 represents trans-1,4-cyclohexylene, 1,3-dioxane-2,5- diyl or, when Q is different from a single covalent bond, also 1,4-phenylene, which is unsubstituted or substituted with at least one halogen, or pyridine-2,5- diyl or pyrimidine-2,5-diyl;
Z1,Z2, Z3 each independently represent a single covalent bond,
-CH2CH2-, -CH2O-, -OCH2-, or -C≡C-;
Q represents -CH2CH2-, -OCH2- or a single covalent
bond;
R1 represents hydrogen, alkyl, alkenyl or alkynyl with 1 to 7 carbon atoms, which is unsubstituted or substituted with at least one of halogen, cyano and/or trifluoromethyl and in which one -CH2- group can be replaced by -O-, or, where ring A1 represents an aromatic ring, also halogen or cyano;
n,p each independently signify 0 or 1; and
X1 represents chlorine or bromine.
3. Compounds according to claim 1 or 2, wherein ring A4 represents trans-1,4-cyclohexylene or, when Q is different from a single covalent bond, also 1,4-phenylene, which is unsubstituted or substituted with at least one halogen.
4. Compounds according to any one of claims 1 to 3, wherein ring A4 signifies trans-1,4-cyclohexylene and Q signifies a single covalent bond.
5. Compounds according to any one of claims 1 to 4, wherein X1 represents chlorine.
6 A liquid crystalline mixture containing at least two components, wherein at least one component is a compound of formula I defined in claim 1.
7. The use of the compounds of formula I defined in claim 1 for electro-optical purposes.
PCT/EP1992/002131 1991-03-26 1992-09-16 Halovinyl-derivatives WO1993007234A1 (en)

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