Patents
Patents for C07C 25 - Compounds containing at least one halogen atom bound to a six-membered aromatic ring (5,308)
01/2001
01/16/2001US6174459 Having butylene group and/or a propyleneoxy group and a 3,4-difluorophenyl group and which can express some physical properties suitable as a liquid crystal display material
01/16/2001US6174458 Tetracyclic compound having lateral halogen substituent and liquid crystal composition comprising the same
01/16/2001US6174457 Compound having alkadienyl group as side chain, and liquid crystal composition using same
01/16/2001US6174456 Stability, low viscosity and high transition temperature of the isotropic phase
01/16/2001US6174455 Liquid crystalline compounds and process for producing the same
01/10/2001EP0854899B1 Fluorine-substituted alkenyl liquid crystalline compounds
01/09/2001US6171664 Tolan derivatives, and liquid-crystalline medium
01/04/2001WO1998005610A3 Process for preparing fluorine-containing compounds
01/03/2001EP1064243A1 Coupling reactions with palladium catalysts
01/02/2001US6169163 Novel 2,7-dihalofluorenes substituted at 9-position
01/02/2001US6168838 Fluorinated phenantrene derivatives for liquid crystal mixtures
01/02/2001US6168728 Optics with high anisotropic value
12/2000
12/21/2000WO2000076947A1 Process for the synthesis of 3,5-bis(trifluoromethyl)-bromobenzene
12/21/2000WO2000076946A1 Process for the preparation of tetrafluorohalogenbenzenes
12/21/2000CA2374595A1 Process for the synthesis of 3,5-bis(trifluoromethyl)-bromobenzene
12/13/2000CN1059427C Process for preparation of nuclear-halogenated benzotrifluorides from corresponding benzotrifluorides
12/12/2000US6159561 1,3-difluoronapthalene derivatives for liquid crystal mixtures
12/12/2000US6159393 Electrooptical liquid-crystal display containing a liquid-crystalline medium
12/12/2000US6159392 5,7-difluoro-1,2,3,4-tetrahydronaphthalene derivatives and their use thereof in liquid crystal mixtures
12/05/2000US6156945 Method of making high purity 2,4- and 3,4-dichlorotoluene
11/2000
11/30/2000WO2000071500A1 Halogen compounds
11/29/2000EP1054853A1 Catalyst recovery for halogen exchange reactions
11/23/2000WO2000069823A1 Ion channel modulating agents
11/23/2000WO2000069798A1 Method for producing 4-chlorobiphenyl and 4-chlorobiphenyl-specific specifications
11/23/2000DE19922934A1 New 5,5-dihalo- or 4,5,5-trihalo-4-pentenoic acid derivatives, useful as bactericides, fungicides, insecticides, acaricides and nematocides, especially plant fungicides
11/21/2000US6150571 Process for the preparation of 2,4-dichloro-3,5-dimethyl-fluorobenzene
11/21/2000CA2026910C Destruction of halogenated organic compounds
11/16/2000DE19922402A1 Preparation of pure 4-chlorobiphenyl by reacting biphenyl and chlorine in presence of catalyst then fractionally distilling, useful as intermediate for pharmaceuticals and plant protectants
11/16/2000DE10013681A1 Fluorocyclohexene compounds, useful as components in liquid crystal mediums for use in liquid crystal and electrooptical display devices
11/08/2000CN1272499A Method for preparing N-[5-(diphenyl phosphinyl methyl)-4-(4-fluoropheyl)-6-isopropyl pyrimidine-2-group]-N-methl methane sulfamide
11/07/2000US6143199 Fluorinated biphenylcyclohexanes, and liquid-crystalline medium
11/07/2000US6143198 Liquid crystalline compounds having exo-methylene site and liquid crystal compositions comprising the same
11/02/2000EP1048636A1 Process for mono-brominating a perfluoroaromatic compound
11/02/2000EP1047645A1 Compound for use as a mineral fibre binder and process for providing such
11/01/2000CN1271712A Fluoric diphenylacetylene compounds and preparing process and application thereof
10/2000
10/31/2000US6139773 Cyclohexane derivatives, and liquid-crystalline medium
10/24/2000CA2021547C Pharmaceutically active 3-aryl and 3-heteroaryl-2-fluoro-1-olefins
10/19/2000WO2000061531A1 Method of producing biaryls
10/19/2000DE19916222A1 Verfahren zur Herstellung von Biarylen A process to prepare biaryls
10/18/2000EP1044952A2 High transverse dipole moment aryl compounds
10/17/2000US6133468 Method for preparing substituted benzyl bromides
10/17/2000US6132641 Composition and support material comprising poly(9,9'-spiro-bisfluorenes)
10/11/2000EP1042265A2 O-derivatives of halogenated diphenyl ether compounds
10/10/2000US6130361 Adding friedel-crafts catalyst; brominating meta isomer; heating above boiling point of other isomers; separation
10/05/2000DE19918009A1 New trans-2,2,6,6-, -3,3,5,5-tetra- and 2,2,3,3,5,5,6,6-octa-fluorocyclohexyl compounds are used in liquid crystal medium in display or dielectric in electrooptical display, e.g. reflective or transflective display
10/05/2000DE19914684A1 New trans-2,2- and -3,3-difluorocyclohexyl compounds are used in liquid crystal medium in display or dielectric in electrooptical display, e.g. reflective or transflective display
10/03/2000US6127577 Fluorinating 1,3,5-trichlorobenzene and then aminating the intermediate fluorinated benzene with aqueous or anhydrous ammonia to achieve the product in yields of greater than 80%
09/2000
09/13/2000EP1035127A1 Process for the preparation of N-[5-(Diphenylphosphinoylmethyl)-4-(4-fluorphenyl)-6-isopropylpyrimidin-2-yl]-N-methylmethansulfonamide
09/13/2000EP0813521B1 Energy-activatable salts with fluorocarbon anions
09/12/2000US6118031 Bromination herbicide intermediate
09/12/2000US6117360 Liquid crystal composition and liquid crystal display device
09/06/2000EP1032577A1 Improved catalysis in halogen exchange reactions
09/06/2000CN1265639A Method for preparing substituted benzyl bromides
09/05/2000USRE36849 Anisotropic compounds and liquid crystal mixtures therewith
09/05/2000US6114590 Catalyzing the halogenation with potassium fluoride in the presence of a quaternary phosphonium salt or a crown ether
08/2000
08/30/2000EP0767772B1 Novel chiral cyclohexyl compounds
08/23/2000EP1028935A1 Fluorinated derivatives of phenanthrene and the utilization thereof in liquid crystal mixtures
08/16/2000EP1027403A2 5-arylindane derivatives and ferroelectric liquid crystal mixture containing same
08/16/2000EP1027314A1 Coupling reactions of 2-substituted, 7-haloindenes with aryl substituents to produce metallocene catalyst ligands
08/16/2000CN1263542A Fluorene-containing polymers and electroluminescent devices therefrom
08/15/2000US6103659 Catalyst comprising an amidophosphonium salt for halex reactions
08/09/2000EP1026143A1 Novel liquid-crystal compounds having large negative value of permittivity anisotropy, liquid-crystal composition, and liquid-crystal display element
08/09/2000EP1026142A1 2,3-difluorophenyl derivatives having negative value of permittivity anisotropy, liquid-crystal composition, and liquid-crystal display element
07/2000
07/26/2000EP1021397A1 Benzanthrone compounds and antiviral uses thereof
07/19/2000CN1260351A Activating composition of metallocene matches in olefin catalytic copolymerization process
07/12/2000CN1259506A Method of separating p-dichlorobenzene from mixed dichlorobenzene by solvent precipitation and crystallization
07/11/2000US6086794 Organic nonlinear optical material and nonlinear optical element using the same
06/2000
06/28/2000EP1013675A2 Activating composition of metallocene complexes in the catalysis of (co)polymerization processes of olefins
06/28/2000EP1013636A1 Preparation of allylic aromatic compounds
06/21/2000CN1257484A Synthesis of intermediates useful in preparing tricyclic compounds
06/21/2000CN1053666C Benzoheterocylic compounds and process for preparing medicated salt thereof
06/20/2000US6077854 Tri-substituted phenyl derivatives and processes for their preparation
06/14/2000EP0820426B1 SUBSTITUTED DIBENZ[a,f]AZULENES AND METHODS OF PREPARATION
06/13/2000US6075171 2-substituted 7-haloindenes and methods for synthesizing
06/13/2000US6075165 Process for the preparation of polyhalogenated benzotrifluorides, benzotrichlorides and benzoyl chlorides and new trihalogenobenzotrichlorides and -benzoyl chlorides
06/07/2000CN1255475A Benzene derivative and its prepn. method
05/2000
05/31/2000DE19955932A1 New cyclobutane derivatives, useful as components of liquid crystal media for liquid crystal displays, reflective or trans-reflective displays and electro-optical displays
05/25/2000WO2000029360A1 Reducing meta content of isomeric mixtures of halo substituted toluenes
05/25/2000DE19946228A1 New benzene derivatives
05/25/2000CA2351000A1 Reducing meta content of isomeric mixtures of halo substituted toluenes
05/24/2000EP1002801A1 Chiral diphenyldiphosphines and d-8 metal complexes thereof
05/23/2000US6066766 By reacting a 1-chloro-4-halo-benzene with an aryl grignard compound in the presence of a dicyclopentadienylphosphinopalladium catalyst of given formula
05/19/2000CA2290009A1 Chiral diphenyldiphosphines and d-8 metal complexes thereof
05/17/2000EP0999999A1 Method for preparing substituted benzyl bromides
05/17/2000EP0842208B1 2,7-aryl-9-substituted fluorenes and 9-substituted fluorene oligomers and polymers
05/16/2000US6063852 Brominated polyphenylmethanes, process for their preparation and fire retardant compositions containing them
05/10/2000EP0880490A4 Synthesis of perfluoro aromatic boranes and borates
05/10/2000CN1252789A 3-cyano-2,4,5-trifluoro-benzoyle fluoride and intermediate preparation thereof
05/10/2000CN1252783A Halogenating agent and preocess for halogenating hydroxyl group
05/09/2000US6060605 Process for producing substituted arylpyrazoles
05/04/2000WO2000010952B1 Decahydronaphthalene derivative
05/03/2000EP0775101B1 Benzene derivatives and liquid crystal medium
05/02/2000US6057006 Comparatively high clearing point and low positive or negative dielectric anisotropy suitable as components of liquid-crystalline media, in particular for tft and stn displays.
05/02/2000US6056895 Fluorocyclohexane derivatives, and liquid-crystalline medium
05/02/2000CA1340979C Silane derivatives, processes for their preparation, agents containing them, and their use as pesticides
04/2000
04/26/2000EP0995734A1 Method for production of halogen-containing aromatic compound
04/26/2000EP0995733A1 Improved process for the preparation of TMPI derivatives
04/19/2000EP0757667B1 Processes for preparing aromatic, bromine-containing compounds, novel bromine-containing compounds, and their use as intermediate products in the synthesis of active agents
04/19/2000EP0525140B1 Liquid-crystal compounds
04/18/2000US6051522 Catalyst which can be used for the preparation of olefins during polymerization
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