Class 570/143 - Preparing benzene ring containing compound

Subclass of Class 570 - Organic compounds -- part of the class 532-570 series
Definition: Process wherein a compound containing a benzene ring is
No. of patents: 85
Last issue date: 08/24/2010

«First «Previous1 2 3 Next»Last»

Number	Title	Issue Date
7781625	Process catalysed by bis-trifilmide compounds A process for carrying out a chemical reaction which is catalysed by one or more metal or hydrogen fluoroalkyl-sulfonylated compound which process comprises carrying out said reaction in the presence of an ionic liquid or in solvent-free conditions. ...	08/24/2010
7214838	Method for transferring TCPX into TFPX A method for transferring TCPX (α, α, α′, α′-tetrachloro-p-xylene) into TFPX (α, α, α′, α′-tetrafluoro-p-xylene) is disclosed, which comprises the following steps: (a) providing a first reactant comprising TFPX; (b) mixing the first reactant with alk...	05/08/2007
7183447	Process for the preparation of ring compounds In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid...	02/27/2007
7173159	Method for synthesizing TFPX A method for the synthesis of TFPX (α, α, α′, α′-tetrafluoro-p-xylene) is disclosed, which comprises the following steps: (a) providing a sulpholane solution comprising TCPX (α, α, α′, α′-tetrachloro-p-xylene); (b) mixing the sulpholane solution with...	02/06/2007
7145046	Production of fluorine compounds Inorganic and organic compounds containing fluorine can be produced, for example, from corresponding chlorine-containing compounds by chlorine/fluorine exchange using fluorinating agents. Monocyclic or bicyclic compounds containing at least two nitrogen atoms, at le...	12/05/2006
7115788	Method for the preparation of α,α,α′,α′-tetrafluoro-p-xylene A method for the preparation of α,α,α′,α′-tetrafluoro-p-xylene is disclosed. α,α,α′,α′-tetrachloro-p-xylene and KF and a small amount of phase transfer catalyst are dissolved in solvent, xylene, and undergo a recycle reaction for 48 hours, after whic...	10/03/2006
7105707	Process for preparing alkynyl-substituted aromatic and heterocyclic compounds Mono- and disubstituted aryl or heterocyclic acetylenes are produced by a process comprising reacting an aryl nitrile with an alkynylzinc compound, a bis-alkynylzinc compound, or an alkynylmagnesium compound, in the presence of a nickel/phosphine catalyst. ...	09/12/2006
7078571	Preparation of 1,3-di-halo-substituted benzene derivatives A process for preparing 1,3-di-halo-substituted benzene derivatives (II) from 2,6-di-halo-substituted benzaldehydes (I) (where X1, X2 are each independently F, Cl, Br, and R1, R2, R3 are each independently H, ha...	07/18/2006
7041859	Method for halogenating or radiohalogenating a chemical compound A method for obtaining a halogenated organic compound, whereby an organotrifluoroborate compound is reacted with a halide ion in the presence of an oxidizing agent to produce the corresponding halogenated organic compound. The method may be used for producing radioh...	05/09/2006
7014890	Fluorinated naphthalenes, liquid-crystal mixtures comprising them, and liquid-crystal displays Compounds of the formula (I) in which the parameters are as defined herein, are suitable for use in liquid-crystal media and liquid-crystal displays which contain these media. ...	03/21/2006
6909023	Production method for benzenedimethanol compound To provide a novel method for producing a fluorinated benzenedimethanol compound useful as a starting material or an intermediate in the production of agricultural or medicinal chemicals in an industrially advantageous manner. A method for producing a fluorin...	06/21/2005
6894200	Synthesis of vicinal difluoro aromatics and intermediates thereof A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds using various bases and a method of preparing intermediates thereof. A method for making a vicinal difluoro halogenated aromatic compound including providing a te...	05/17/2005
6872861	Process for preparing polyfluoroalkylithium compounds The invention relates to a process for preparing polyfluoroalkyl-lithium compounds by deprotonation of polyfluoroalkyl compounds by means of lithium bases. ...	03/29/2005
6855850	Method of manufacturing fluorine compounds, and a method of recovering or regenerating precursors of fluorinating agents To provide a practical method of manufacturing fluorine compounds in a small number of steps that can carry out fluorination reaction of substrates using easily available fluorinating agents that can be inexpensively produced industrially, and recover precursors of ...	02/15/2005
6784327	Process for the production of fluorinated organic compounds and fluorinating agents A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a f...	08/31/2004
6781021	Method for isomerizing halogenated aromatics A catalyst composition with a high halogenated aromatics isomerization activity, a halogenated aromatic isomerization method using said catalyst composition, and a halogenated aromatics isomerization method capable of prolonging the life or regeneration period of th...	08/24/2004
6706933	Synthesis of vicinal difluoro aromatics and intermediates thereof A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds and a method of preparing intermediates thereof. The hydroxy aromatic compound can be a mono-, bi- or tricyclic aromatic in which the rings are separate or fused....	03/16/2004
6657093	Preparation of substituted aromatic compounds A process for preparing compounds of the formula (II), ##STR1## where the substituents R1 to R5 are each independently H, CH3, straight-chain or branched C1 -C8 -alkyl, CH(OC1 -C5	12/02/2003
6613948	Process for the preparation of 2,3,4,5-tetrafluorobenzene derivatives 2,3,4,5-tetrafluorobenzene derivatives can be obtained in a particularly advantageous manner by reacting the corresponding chlorobenzene or (chloro, fluoro)-benzene derivatives with a fluorinating agent in the presence of a solvent and a catalyst at eleva...	09/02/2003
6515191	Synthesis of vicinal difluoro aromatics and intermediates thereof A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds and a method of preparing intermediates thereof. The hydroxy aromatic compound can be a mono-, bi- or tricyclic aromatic in which the rings are separat...	02/04/2003
6455744	Synthesis of vicinal difluoro aromatics and intermediates thereof A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds and a method of preparing intermediates thereof. The hydroxy aromatic compound can be a mono-, bi- or tricyclic aromatic in which the rings are separat...	09/24/2002
6399835	Process for electrophilic aromatic substitution Processes for the electrophilic substitution of aromatic compounds, such as alkylation, with a desired substituent are disclosed. The processes include contacting the aromatic compound, a precursor of the desired substituent and an aqueous reagent contain...	06/04/2002
6392097	Process for the preparation of derivatives of octafluoro-[2,2] paracylophane Processes for the preparation of parylene dimers, and more particularly to processes for the preparation of derivatives of octafluoro-[2,2]paracylophane, otherwise known as AF4....	05/21/2002
6194620	Dichloro tetraflouro-{2,2}-paracyclopane, a process for manufacturing thereof and poly-଱, ଱-difluoro-chloro-para-xylylene film prepared therefrom Dichloro-tetrafluoro-[2,2]-paracyclophane (formula I), which is a novel compound useful as a material for forming a coating film by chemical vapor deposition, and a process for manufacturing thereof and poly-଱଱-difluoro-chloro-para-xylylene fi...	02/27/2001
6150571	Process for the preparation of 2,4-dichloro-3,5-dimethyl-fluorobenzene A method for preparing 2,4-Dichloro-3,5-dimethylfluorobenzene, wherein the 2,4-Dichloro-3,5-dimethylfluorobenzene can be prepared in highisomeric selectivities when 3,5-dimethylfluorobenzene is chlorinated in the presence of Friedel-Crafts catalysts and a...	11/21/2000
6084132	Fluorescent dyes Fluorescent dyes which fluoresce in a variety of colors are produced from substituted and un-substituted 6-ring and 8-ring aromatic diketones by reductive alkylation with alkyl halides in the presence of zinc....	07/04/2000
6066766	Process for the preparation of 4-chlorobiphenyls 4-Chlorobiphenyls are prepared by reacting a haloaromatic with an aryl Grignard compound, where halogen is chlorine, bromine or iodine, in the presence of a palladium catalyst of the formula (IV) ##STR1##...	05/23/2000
6043397	Method for production of fluorine-containing aromatic compounds A method for the production of a fluorine-containing aromatic compound is provided which allows the relevant reaction to proceed in a standard reaction vessel such as, for example, a glass vessel at room temperature under an ambient pressure without requi...	03/28/2000
6008407	Method of preparing fluoroaromatic compounds The present invention provides a method of preparing ortho-difluorobenzene derivatives, which comprises (a) providing a mixture of cyclohexenes by reacting chlorotrifluoroethylene (CTFE) and 1.3-diene in a flow reactor and distilling the resultant, and (b...	12/28/1999
5900502	Fluorination process According to the present invention there is provided a process for the selective introduction of one or more fluorine atoms into a disubstituted aromatic compound in an acid medium with fluorine gas characterized in that the acid medium has a dielectric c...	05/04/1999
5849962	Process for the preparation of octafluoro-(2,2) paracyclophane A process for the preparation of octafluoro-2,2!paracyclophane includes contacting a reactant selected from the group consisting of 1,4-bis(bromodifluoromethyl)benzene (dibromide), 1,4-bis(chlorodifluoromethyl)benzene (dichloride), and 1,4-bis(iodo...	12/15/1998
5841005	Parylene AF4 synthesis Methods of making parylene AF4 using novel that result in reduced cost. Low dilution technology may used to provide parylene AF4 in substantially improved yields. The relative amount of transition metal catalyst can be decreased. The amount of undesired b...	11/24/1998
5763700	Pesticidal fluoroolefins A pesticidal compound, suitable for combating soil borne insect pests has formula I: ##STR1## in which formula: ArA represents a phenyl or naphthyl group optionally substituted by one or more groups selected from halogen, alkoxy, halo...	06/09/1998
5744656	Conversion of hexafluorobenzene to bromopentafluorobenzene A method for producing tetrakis (pentafluorophenyl) borates is described. Hexafluorobenzene is converted to bromopentafluorobenzene which may be isolated and then reacted with an alkyl lithium to produce pentafluorophenyl lithium which in turn is reacted ...	04/28/1998
5686608	Process for cross-coupling aromatic boron compounds with aromatic halogen compounds or perfluoroalkylsulfonates A process for preparing polycyclic aromatic compounds by cross-coupling aromatic boron compounds with aromatic halogen compounds or perfluoroalkylsulfonates in the presence of metallic palladium as catalyst comprises adding to the reaction a) at least one...	11/11/1997
5654490	Benzoyl derivatives and synthesis thereof The present invention relates to novel 4-halo-2-fluoro-5-alkylbenzoyl compounds and their methods of manufacture. These compounds are useful for the preparation of agricultural chemicals and medicines, particularly as intermediates for an active class of ...	08/05/1997
5550236	Process for cross-coupling aromatic boronic acids with aromatic halogen compounds or perfluoroalkylsulfonates A process for preparing polycyclic aromatic compounds by cross-coupling aromatic boronic acids with aromatic halogen compounds or perfluoroalkylsulfonates in the presence of metallic palladium, if desired applied to a support material, as catalyst, wherei...	08/27/1996
5536892	Processes for the preparation of octafluoro-[2,2]paracyclophane A process for the preparation of octafluoro-[2,2]paracyclophane includes contacting a reactant selected from the group consisting of 1,4-bis (bromodifluoromethyl)benzene (dibromide), 1,4-bis (chlorodifluoromethyl)benzene (dichloride), and 1,4-bis (io...	07/16/1996
5510533	Process for producing 3,5-difluoroaniline and derivative thereof A process for production of a 3,5-difluoroaniline compound with ease is disclosed, which comprise reacting an aminating agent with a 1,3,5-trifluorobenzene compound....	04/23/1996
5504264	Process for preparing 1,3-difluorobenzene Process for preparing 1,3-difluorobenzene by means of the catalytic elimination of halogen from a 1,3-difluorohalobenzene, by reacting a 1,3-difluorohalobenzene of the formula (1) ##STR1## in which R1 to R4 are H, Cl or Br, and ...	04/02/1996

«First «Previous1 2 3 Next»Last»

PatentStorm

Quotables

PatentStorm News

Class 570/143 - Preparing benzene ring containing compound