Patents
Sitemap › C07 - Organic chemistry › C07B - General methods of organic chemistry; Apparatus therefor › C07B 39 - Halogenation
Patents for C07B 39 - Halogenation (1,839)
05/1993
05/13/1993CA2122265A1 Chlorination and elimination process and some products thereof
04/1993
04/21/1993EP0537540A1 Process for the radical chlorination or bromination of methyl substituted aromatics
04/12/1993CA2080204A1 Process for the free-radical chlorination or bromination of methyl aromatic compounds
03/1993
03/31/1993EP0534317A1 Process for the preparation of chlorinated and fluorinated benzene compounds by selective nucleophilic fluorodenitration
03/31/1993EP0534081A2 Anodic electrode for electrochemical fluorine cell
03/30/1993US5198549 Side-chain chlorination of alkylated nitrogen heteroaromatics
03/30/1993CA1315281C Continuous decomposition of diazonium fluorides
03/24/1993EP0377638B1 Process for the iodination of hydroxyaromatic and aminoaromatic compounds
03/23/1993US5196611 Chlorination of the alcohol, a phosphine oxide catalyst
03/23/1993CA1314896C Process for preparing iodinated substituted aromatic compounds
03/22/1993CA2078604A1 Process for the preparation of chlorinated and fluorinated benzene compounds by selective nucleophilic fluorodenitration
02/1993
02/17/1993CN1069082A Anodic electrode for electrochemical fluorine cell
02/10/1993EP0526849A1 Novel substituted N-Fluoropyridiniumsulfonate, intermediates therefor and preparation processes thereof
02/04/1993WO1993002036A1 Novel process for aromatic bromination
02/04/1993CA2112127A1 Novel process for aromatic bromination
02/03/1993EP0307458B1 Processes for isomerizing and oxidative iodinating aromatic compounds
02/02/1993CA2074991A1 Novel substituted n-fluoropyridiniumsulfonate, intermediates therefor and preparation processes thereof
01/1993
01/05/1993US5177275 Controlling exotherm, fluorination of vinylidene chloride
12/1992
12/29/1992US5175302 Nucleophilic fluoroalkylation of aldehydes
11/1992
11/25/1992EP0514683A1 Process for the preparation of alkyl-, alkenyl and alkinylchlorides
11/25/1992EP0514472A1 Halogenation of aromatic amine compounds.
11/18/1992CN2121989U Chlorine distributing device for paraffin wax chloride reactor
11/11/1992EP0512715A2 Verfahren zur Herstellung einer in 3-Stellung fluorierten aromatischen Verbindung
11/11/1992EP0307457B1 Improved vapor phase bromination of aromatic compounds
11/10/1992CA1310018C Process for cleaving aliphatic ether compounds
11/03/1992CA1309729C Liquid phase isomerization of iodoaromatic compounds
10/1992
10/28/1992EP0510492A1 Photochlorination of phthalic anhydride
10/23/1992CA2059470A1 Photochlorination of phthalic anhydride
10/21/1992EP0509193A2 Fluid waste burner system
10/20/1992CA1309113C Selective liquid phase disproportionation catalysts for iodoaromatics
10/14/1992EP0508261A2 Process for preparing beta-halogen tert.alkyl carboxylic acid chlorides
10/07/1992CN1018545B Novel method for oxyiodination product partial purification
10/06/1992CA1308421C Process for preparing iodinated aromatic compounds
09/1992
09/30/1992EP0505818A1 Process for the preparation of 2-chloro-5-methylthio-1,3,4-thiadiazole
09/23/1992EP0504662A1 Catalytically active salt mixtures comprising a quaternary alkylammonium alkylcarbonate
09/22/1992US5149858 Reacting with chlorine gas in presence of organic cation catalysts
09/22/1992CA1307798C Oxyiodination incorporating an iodine generator for the conversion of methyl iodide to iodine
09/09/1992EP0502333A1 Bromination process
08/1992
08/26/1992EP0381702B1 Novel method for oxyiodination product partial purification
08/26/1992CA2058126A1 Bromination process
08/11/1992US5138107 Phase transfer catalyzed halogenation of carbon acids
08/06/1992WO1992012983A1 A method of fluorinating by using n-fluoropyridinium pyridine heptafluorodiborate
07/1992
07/29/1992CN1063096A Process for production of ethylene and mixtures containing ethylene
07/21/1992US5132475 With single acidic hydrogen and electron withdrawing group attached to same hydrogen
07/14/1992US5129335 Fluid waste burner system
07/01/1992EP0493030A1 Preparation of difluorobenzenes
06/1992
06/25/1992WO1992010447A1 A process for the production of ethylene or a mixture of ethylene and vinyl chloride
06/17/1992EP0490378A1 Bromination process
06/13/1992CA2056270A1 Bromination process
06/03/1992EP0307446B1 Liquid phase isomerization of iodoaromatic compounds
05/1992
05/20/1992EP0486333A1 Process for the preparation of 1,1,1,2-tetra fluoroethane
05/19/1992CA1301195C Process for the chloration of phenolic compounds
05/19/1992CA1301194C Process for selective chloration of phenolic compounds
05/19/1992CA1301163C Process for the preparation of 2-halogenated ergoline derivatives
05/12/1992US5113013 Process for preparing fluorine-containing organic compounds
05/05/1992US5110425 Terminal chlorination of normal alkane hydrocarbons
05/05/1992CA1300156C Process for the iodination of hydroxyaromatic and aminoaromatic compounds
04/1992
04/21/1992US5107046 Adding urea to reaction mixture to suppress vapor pressure of hydrogen fluoride, diazotization, fluorination
04/01/1992EP0478210A1 Fluorinated diazabicycloalkane derivatives
03/1992
03/31/1992CA1298317C Vapor phase bromination of aromatic compounds
03/24/1992US5099085 Chlorination of hydrocarbons
03/10/1992CA1297114C Method of chlorination
03/03/1992US5093432 Perfluorination of esters or ethers
03/03/1992US5092971 Bromination
02/1992
02/04/1992US5086190 Method of fluorinating by using N-fluoropyridinium pyridine heptafluorodiborate
02/04/1992US5086178 Electrophilic fluorinating agents
01/1992
01/22/1992EP0467742A1 Process for the preparation of fluor derivatives
01/14/1992US5081249 From gaseous fluorine and solution of pyridinesulfonate
12/1991
12/10/1991US5072038 Chemical intermediates for bactericides
11/1991
11/28/1991WO1991017972A1 Improved process for preparing aromatic fluorides
11/27/1991EP0458109A1 Side chain chlorination of alkylated pyridine or pyrimidine derivatives
11/27/1991EP0211916B1 Process for the preparation of alkyl fluorides
11/21/1991EP0427782A4 Terminal chlorination of normal alkane hydrocarbons
11/12/1991US5064518 Method for the selective alpha halogenation of alkylaromatic compounds
10/1991
10/09/1991EP0253837B1 Catalytic method for producing fluoroaromatic compounds using branched alkyl pyridinium salts
10/08/1991US5055235 Bromination process
09/1991
09/17/1991CA1289152C Process for preparing aromatic fluorides
09/10/1991CA1288777C N-fluoropyridinium salt and process for preparing same
08/1991
08/21/1991EP0441807A1 Liquid phase fluorination.
08/21/1991EP0253838B1 Catalytic method for producing fluoroaromatic compounds using n-sec-alkyl pyridinium salts
08/21/1991EP0252964B1 Catalytic method for producing fluoroaromatic compounds using substituted pyridinium salts
08/20/1991US5041687 Bromination process
08/08/1991WO1991011430A1 Halogenation of aromatic amine compounds
07/1991
07/24/1991EP0437689A1 A method for fluorodecarboxylation
06/1991
06/26/1991CN1012985B Device for fixing tubes which pass through wall
06/19/1991EP0408759A4 Method of obtaining bromated aromatic and heterocyclic combinations containing acceptor groups
06/12/1991EP0431305A1 Process for the preparation of molluscicidal 2,4,5-tribromopyrrole-3-carbonitrile compounds
06/11/1991US5023377 Process for preparing fluorinated compounds
06/05/1991EP0430434A2 Process for the preparation of fluoroaromatic and fluoroheteroaromatic compounds
06/04/1991US5021220 Kit for preparing radiodiagnostic examination compositions
05/1991
05/28/1991CA1284495C Chlorination of carbohydrates and other alcohols
05/22/1991EP0427782A1 Terminal chlorination of normal alkane hydrocarbons
05/15/1991EP0427603A1 Process for the preparation of fluorinated aromatic compounds and catalysts based on Lewis-acids
05/08/1991EP0425887A2 Process for halogen-fluor exchange in organic compounds and catalysts therefor
05/07/1991CA2029328A1 Process for preparing fluorinated aromatic derivatives with a lewis acid catalyst
04/1991
04/16/1991US5008403 Reacting 2-trihaloacetylpyrrole-4-carbonitrile with base and brominating agent in solvent; one step
03/1991
03/26/1991US5003074 N-fluorinated sulfonamides
03/20/1991CN1050021A Synthetic process of diterpenic lactone
03/19/1991US5001289 Shaped zeolite catalyst for liquid phase organic reactions
03/12/1991US4999429 Desulfonation of corresponding aryl sulfone compound
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