Class 260/665G - Grignard type

Subclass of Class 260 - Chemistry of carbon compounds
No. of patents: 85
Last issue date: 01/18/2011

Number	Title	Issue Date
7871547	Halide reduction in dihydrocarbylmagnesium mixtures This invention provides a process for reducing the amount of soluble halide in a solution comprising a liquid organic medium, at least one viscosity reducing agent, at least one dihydrocarbylmagnesium compound, and an initial amount of soluble halide. The process co...	01/18/2011
7427370	Method for the production of Grignard compounds The invention relates to a method for producing Grignard compounds, according to which magnesium is reacted in a suitable fluid reaction medium in a protective atmosphere with hologen-substituted organic compounds by means of microwave radiation. ...	09/23/2008
7387751	Method of preparing organomagnesium compounds The present invention is directed to a reagent for use in the preparation of organomagnesium compounds as well as to a method of preparing such organomagnesium compounds. The present invention furthermore provides a method of preparing functionalized or unfunctional...	06/17/2008
7384580	Method of preparing organomagnesium compounds The present invention is directed to a reagent for use in the preparation of organomagnesium compounds as well as to a method of preparing such organomagnesium compounds. The present invention furthermore provides a method of preparing functionalized or unfunctional...	06/10/2008
7311759	Process for purifying off-gases of a melamine plant A two-stage process is provided for purifying off-gases from a high-pressure melamine plant. In the first stage, the off-gases are contacted with a recirculated urea melt containing melamine precursors and NH3. In the second stage, the off-gases are conta...	12/25/2007
7208627	Alkylborazine compound and production method for the same In the process of synthesizing alkylborazine compound represented by the chemical formula 2, by a reaction of a halogenated borazine compound represented by the chemical formula 1 with a Grignard reagent, thus synthesized alkylborazine compound is washed with water,...	04/24/2007
7205441	Method for producing tetrakis (fluoroaryl) borate-magnesium compound Fluoroaryl magnesium halide is reacted with a boron compound so that a molar ratio of the fluoroaryl magnesium halide to the boron compound is not less than 3.0 and not more than 3.7, so as to produce a tetrakis (fluoroaryl) borate.magnesium compound. With this meth...	04/17/2007
6951960	Method for removing impurities from solvent extraction solutions A method for regenerating an amine extractant used for recovery of metals involves contacting a liquid organic phase containing an amine complexed with one or more metals with an aqueous solution substantially free of chloride ions to strip the one or more metals fr...	10/04/2005
6899830	Method for producing Grignard compounds The invention relates to a process for preparing Grignard compounds of the formula I. The invention additionally relates to compounds of the formula I and to polymer-bound compounds of the formula Ia. The invention further relates to the use of the process for prepa...	05/31/2005
6861011	Process for preparing methyllithium Methyllithium is prepared by reacting chloromethane with a dispersion lithium metal in an aromatic organic solvent with methyltetrahydrofuran. ...	03/01/2005
6814895	Process for the synthesis of 1-(3,5-bis(trifluoromethyl)phenyl)ethan-1-one The present invention is concerned with a novel process for the preparation of 1-(3,5-bis(trifluoromethyl)phenyl)ethan-1-one (CAS 30071-93-3). This compound is useful as an intermediate in the synthesis of therapeutic agents. ...	11/09/2004
6552237	Grignard preparation of unsaturated organic compounds A Grignard-type process for the preparation of unsaturated organic compounds. The process comprises contacting an unsaturated organic halide with magnesium metal in a mixture of ether and a polar halogenated hydrocarbon co-solvent, filtering the reaction ...	04/22/2003
6541651	Process for chlorosilane intermediates manufacture Processes for the preparation of phenyl Grignard reagents in co-solvents of toluene and ether and, the preparation of phenylchlorosilane intermediates using co-solvents of toluene and ether essentially in a one step process. The phenylchlorosilanes in the...	04/01/2003
6455718	Halogen exchange reactions in preparing catalysts and their precursors Chloropentafluorobenzene or bromopentafluorobenzene is formed by heating perhalobenzene, C6 Fn X6-n where n is 0 to 4, and each X is, independently, a chlorine or bromine atom, with alkali metal fluoride, and an aminophosp...	09/24/2002
6432326	Method for the stereoselective production of grignard compounds and use thereof A process for the stereoselective preparation of Grignard compounds of the formula I and polymer-bonded compounds of the formula Ia is described. The process can be used for producing substance reference libraries and the compounds of the formulae I and I...	08/13/2002
6303057	Preparation of cycloalkylacetylene compounds The process of invention reacts an alkynyl halide with a mixture that includes a dialkylaminomagnesium halide or a bis(dialkylamino)magnesium compound to produce a cycloalkylacetylene compound. Preferably, the dialkylaminomagnesium halide compound is of t...	10/16/2001
6296788	Process for the preparation of Grignard reagents and novel Grignard reagents Grignard reagents which contain a protected aldehyde function are obtained in a particularly advantageous manner from a halogenated aldehyde by reaction with a secondary monoamine to give an open-chain aminal, and conversion of the latter into a Grignard ...	10/02/2001
6274068	Synthesis of 2-hydroxyarylaldehydes A method for the preparation of 2-hydroxyarylaldehydes from an aryloxy magnesium compound and formaldehyde, which comprises reacting at a temperature from 40-120° C., an aryloxy magnesium compound having an aryloxy anion and a non-aryloxy anion and in wh...	08/14/2001
6248265	Clean generation of a fluoroaryl grignard reagent Fluoroaryl Grignard reagents are produced from a hydrocarbyl Grignard reagent and fluoroaromatic compounds via separate additions of different fluoroaromatic compounds, such that the conversion of hydrocarbyl Grignard reagent to the desired fluoroaryl Gri...	06/19/2001
6241917	Halogen exchange reactions in preparing catalysts and their precursors Chloropentafluorobenzene or bromopentafluorobenzene is formed by heating perhalobenzene, C6 Fn X6-n where n is 0 to 4, and each X is, independently, a chlorine or bromine atom, with alkali metal fluoride, and an aminophosp...	06/05/2001
6235222	Method for manufacturing fluoroaryl magnesium halide In order to provide a method of safely, efficiently, and industrially manufacturing fluoroaryl magnesium halide containing no impurities, such as coloring components, by a relatively gradual reaction compared with the conventional reactions, and a method ...	05/22/2001
6231790	Tetrakis-pentafluorophenyl borates from pentafluorophenyl grignard reagents Pentafluorophenyl Grignard reagents are reacted with a boron trihalide in a non-ethereal solvent such as toluene to produce a tetrakis pentafluorophenyl borate magnesium halide....	05/15/2001
6221285	Production of organomagnesium compounds using catalysts The preparation of organomagnesium compounds from organic halides, especially aromatic chloro compounds, and magnesium metal in the presence of a transition metal compound as a catalyst....	04/24/2001
6197089	Activated magnesium metal The invention relates to activated magnesium metal, to a method of activating magnesium metal and to its use for the preparation of organomagnesium compounds. The activated magnesium metal is obtainable by reacting molten magnesium metal with magnesium hy...	03/06/2001
6175027	Synthesis of bis (alkyl cyclopentadienyl) metallocenes A method for producing an alkyl cyclopentadiene by reacting cyclopentadienyl Grignard with an alkyl halide and for converting the alkyl cyclopentadiene to a bis(n-alkyl cyclopentadienyl) Group IV metal dihalide is described....	01/16/2001
6129863	Clean generation of a perfluoroaryl grignard reagent Perfluoroaryl Grignard reagents are produced from a hydrocarbyl Grignard reagent and polyhaloaromatic compounds via separate additions of different polyhaloaromatic compounds, such that the conversion of hydrocarbyl Grignard reagent to the desired perfluo...	10/10/2000
6117372	Method of synthesizing grignard compounds using catalysts Grignard compounds from aromatic chlorine compounds and magnesium metal in the presence of a transition metal/magnesium chloride complex as a catalyst....	09/12/2000
6080888	Preparation of olefinic compounds and carboxylic derivatives thereof Arylolefinic compounds are prepared by reacting aryl halide with an olefinic compound in the presence of a polar liquid reaction medium containing (a) secondary or tertiary amine as a hydrogen halide acceptor (b) a catalyst system formed from (i) Pd or Pd...	06/27/2000
6057480	Process for preparing fluoroaryl magnesium derivative and process for preparing (fluoroaryl) borane compound A fluoroaryl magnesium derivative is produced by reacting aryl fluoride, hydrocarbon halide, and magnesium with one another in an ether solvent or a mixed solvent of the ether solvent and a hydrocarbon solvent. Also, a (fluoroaryl)borane compound is produ...	05/02/2000
6054628	Reacting Grignard compounds with carbonyl compounds and ensuing hydrolysis In a process for carrying out an exothermal reaction, selected from the addition reaction of organomagnesium halide compounds to carbonyl compounds and the ensuing hydrolysis of the addition product, a considerable fraction of the heat liberated during th...	04/25/2000
5910605	Process for the preparation of 3-hydroxy-2-methylbenzoic acid and 3-acetoxy-2-methylbenzoic The invention relates to a process for the preparation of 3-hydroxy-2-methylbenzoic acid and 3-acetoxy-2-methylbenzoic acid, which comprises reacting 3-chloro-2-methylphenol (3) with benzyl chloride to give 2-benzyloxy-6-chlorotoluene (4) subjecting this ...	06/08/1999
5852216	Preparation and use of (3-alkoxy-phenyl) magnesium chlorides A method of preparing (3-alkoxyphenyl)magnesium chlorides and the use thereof for reaction with certain carbonyl compounds are described....	12/22/1998
5831106	Preparation of bridged metallocene complexes A process for preparing metallocene complexes of the general ##STR1## in which the substituents have the following meanings: M is titanium, zirconium, hafnium, vanadium, niobium or tantalum, X is fluorine, chlorine, bromine, iodine, hydrogen, C1 -C	11/03/1998
5792886	Production of racemic 2-(6-methoxy-2-naphthyl) propionic acid of precursors thereof In producing (&#b1;)-2-(6-methoxy-2-naphthyl)propionic acid or precursor thereof from 2-bromo-6-methoxynaphthalene, use is made of 2-bromo-6-methoxynaphthalene formed by (a) methylating 6-bromo-2-naphthol with methyl chloride in a solvent comprising one o...	08/11/1998
5779942	Long-chain dialkylmagnesium, its preparation process and applications This dialkylmagnesium is represented by the formula R--(CH2 --CH2)n --Mg--(CH2 --CH2)n' --R', (E--O--E')x, where R and R' each independently represent a C1 -C20	07/14/1998
5744071	Processes for preparing alkynyl ketones and precursors thereof The present invention provides processes for making alkynyl ketones and precursors thereof, using less expensive reagents and/or hydrocarbon solvents and/or higher temperatures....	04/28/1998
5693261	Preparation of pentafluorophenyl compounds Pentafluorophenylmagnesium halides are prepared by a Grignard exchange reaction of hydrocarbylmagnesium halide with pentafluorochlorobenzene. The pentafluorophenylmagnesium halides are converted to pentafluorophenyl metal or metalloid derivatives by react...	12/02/1997
5474716	Process for the preparation of bridged cyclopentadienylmagnesium compounds and use thereof for preparing metallocenes Disclosed are processes for the preparation of new bridged cyclopentadienylmagnesium compounds of the general formula Q(CpRa)(Cp'R'a ')Mg, and the use thereof for preparing bridged metallocenes....	12/12/1995
5453221	Bridged cyclopentadienylmagnesium compounds and use thereof for preparing metallocenes Disclosed are new bridged cyclopentadienylmagnesium compounds of the general formula Q(CpRa) (Cp'R'a')Mg, processes for the preparation thereof, and the use thereof for preparing bridged metallocenes....	09/26/1995
5362423	Method of producing pentafluorophenylmagnesium derivatives using pentafluorobenzene Disclosed is a production method, wherein, with pentafluorobenzene represented by C6 HF5, 0.5 to 1.5 equivalents of organometallic compound represented by a general formula R2-n MgXn (wherein n denotes a real number of 0 or 1, ...	11/08/1994

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Class 260/665G - Grignard type