Patents
Patents for C07C 201 - Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton (5,786)
12/2000
12/20/2000CN1059667C Process for polynitration of aromatic compounds
12/20/2000CN1059666C Process for producing C1-C4-alkyl nitrites
12/14/2000WO2000075094A2 Method for producing a halogenated acetophenone
12/12/2000US6160190 Alkylation of aromatic compounds using a sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide
12/12/2000US6160127 4-5-disubstituted-2,.beta.-nitrostyrene is subjected to a reductive cyclization in the presence of a water soluble dithionite salt
11/2000
11/23/2000WO2000069803A1 Process for the preparation of nitro compounds and method for the removal of nitrogen dioxide
11/23/2000WO2000069800A2 Process for preparing ketones or aldehydes
11/21/2000US6150558 Bis-o-amino(thio)phenols, and their preparation
11/14/2000CA1341138C Fluorine-containing chiral smectic liquid crystals
10/2000
10/25/2000EP1046632A1 Process for the preparation of 1-substituted 2,4-dinitrobenzenes
10/25/2000EP1045823A1 Process for making certain benzoic acid compounds
10/19/2000WO2000061531A1 Method of producing biaryls
10/19/2000DE19916222A1 Verfahren zur Herstellung von Biarylen A process to prepare biaryls
10/17/2000US6133468 Method for preparing substituted benzyl bromides
10/12/2000WO2000059883A2 Method for producing n-aryl-aza-heterocycles in the presence of cesium carbonate
10/12/2000CA2360923A1 Process for the arylation of aza-heterocycles with activated aromatics in presence of caesium carbonate
10/05/2000WO2000058261A1 Solid nitrating reagent
10/05/2000WO2000058240A1 Method for activating aromatic substrates by microwaves
10/05/2000CA2366453A1 Method for activating aromatic substrates by microwaves
10/04/2000CN1268947A Process to produce 4-hydroxy-2-oxo-pyrone derivates useful as protease inhibitors
10/03/2000US6126904 Apparatus and methods for the preparation of chemical compounds
09/2000
09/27/2000EP1038862A2 Process for the preparation of nitric monoesters of dihydroxyalkyl, dihydroxycycloalkyl and dihydroxy(poly)cycloalkyl compounds
09/27/2000CN1267663A Preparation and purification process of 2,4,4'-trichloro-2'-nitro diphenyl ether as material of germicide
09/20/2000EP0773919B1 Method for preparing 3-carboxy-4-hydroxybenzaldehydes and derivatives thereof
09/13/2000CN1266422A Nitration process for diphenyl ethers
09/13/2000CN1266052A Process for preparing tetranitro-diphenylamine from N-carbonylaniline
09/08/2000WO2000051966A1 The method for preparing 4-nitrodiphenylamine from carbanilide
09/06/2000EP1032549A1 Process for electrophilic aromatic substitution
09/06/2000EP0711146B1 Osmotic device having a vapor-permeable coating
09/06/2000CN1265639A Method for preparing substituted benzyl bromides
09/05/2000US6114589 Process for the preparation of fluorinated aromatic compounds
08/2000
08/23/2000EP1028937A1 Method for producing aromatic nitro compounds
08/23/2000EP1028807A1 Systems and methods for combinatorial organic synthesis of arrays of reaction
08/23/2000EP1028802A1 Reactions of aromatic compounds
08/23/2000CN1263882A Method for preparing fluorine-substituted aromatic compound
08/23/2000CN1055678C 4-hydroxy-2'-nitrobutyrophenone and tetrahydro-2-(o-nitropheynl)-2-furanol and useful thereof
08/15/2000US6103659 Catalyst comprising an amidophosphonium salt for halex reactions
08/09/2000CN1262672A Nitrosation method of phenolic composition substituted by electro-attracting group and use thereof
08/08/2000US6100431 By reacting an ortho-nitro aromatic ketone with a thiolate anion to displace the nitro group; ortho-thioether aromatic ketones useful as intermediates to hypotensive agents and herbicides
08/03/2000WO2000044705A1 Synthesis method of nitroxymethylphenyl esters of aspirin derivatives
08/03/2000CA2361454A1 Synthesis method of nitroxymethylphenyl esters of aspirin derivatives
08/01/2000US6096929 Reaction of an aromatic nucleus substituted with a halide and an ortho nitro group with a nitroalkane in the presence of a hydroxide base followed by oxidation.
07/2000
07/26/2000EP1021412A1 Nitration of aromatic compounds
07/05/2000EP1015441A1 Process to produce 4-hydroxy-2-oxo-pyrane derivatives useful as protease inhibitors
07/05/2000EP1015414A1 Method for producing a dinitronaphthalene-isomer mixture having a high 1,5-dinitronaphthalene proportion
06/2000
06/29/2000DE19918291C1 Production of high-purity 2,4-dinitrophenoxy alcohol derivatives comprises simultaneously introducing streams of a 2,4-dinitrophenyl halide and a diol mono (alkali metal) salt into a reactor
06/28/2000EP1013636A1 Preparation of allylic aromatic compounds
06/28/2000EP1013635A1 Preparation of diphenylethers
06/28/2000EP1013629A1 Preparation process of fluorine subsituted aromatic compound
06/28/2000CN1053889C Process for preparing dinitrotolene
06/27/2000US6080890 Catalytic hydrogenation of corresponding aromatic nitro compounds in gas phase in the presence of catalysts which, besides palladium, vanadium and lead, contain molybdenum, tungsten and/or rhenium or their compounds on ceramic support
06/20/2000US6077963 Process to produce a protease inhibitor
06/15/2000WO2000034223A1 Method of preparing salts of dinitromethane
06/15/2000WO2000034215A1 METHOD OF MAKING α-CHLORO-α,α-DIFLUORO AROMATIC COMPOUNDS
06/14/2000EP0790972B1 Synthesis of bis(2,2-dinitropropyl)formal (bdnpf)
06/07/2000EP1005477A2 Method for isolating anionic organic substances from aqueous systems using cationic polymer nanoparticles
06/07/2000EP1005395A1 Systems and methods for parallel synthesis of compounds
06/07/2000EP0792254B1 Synthesis of bis(2,2-dinitropropyl)acetal (bdnpa)
06/06/2000US6072080 Dissolving mixture in crystallizing solvent, washing solution with aqueous acidic solution, recrystallizing
06/06/2000US6072071 Reacting polyol containing 1,2- or 1,3-diol fragment with alkyl or aryl boronic acid to form cyclic boronate ester derivative which is then reacted with dinitrogen pentoxide to directly generate dinitrate ester
05/2000
05/31/2000EP1004570A1 A process for the production of nitroarenes with high para-selectivity from monosubstituted aromatic hydrocarbons using aluminosilicates as catalysts
05/31/2000EP1003710A1 Method for treating aqueous solutions comprising acids and nitrated compounds
05/30/2000US6069282 Process for the preparation of aldehydes and ketones
05/30/2000CA1341010C Compounds useful in preparing fluorine-containing chiral smectic liquid crystals
05/17/2000EP1000010A1 Nitration process for diphenyl ethers
05/17/2000EP0999999A1 Method for preparing substituted benzyl bromides
05/16/2000US6063967 Preparation of picric acid
05/10/2000CN1252787A Production of aromatic amines by means of novel hydrogenation catalysts
05/03/2000EP0996606A1 Catalysed fluorination of carbonyl compounds
05/03/2000CN1251833A Process for preparing substituted benzoic acid
04/2000
04/27/2000WO2000023435A1 sYCLIC PHENOL SULFIDE-METAL COMPLEXES, CATALYSTS COMPRISING THE SAME AND ANALYTICAL METHODS FOR HYDROGEN PEROXIDE
04/26/2000CN1251362A Industrialzed preparing method for high-purity alpha-nitro-naphthalene
04/25/2000US6054609 Adding an aromatic organic base to mixture of 3-nitro-o-toluic acid and 5-nitro-o-toluic acid and efficiently recovering both 3-nitro-o-toluic acid and 5-nitro-o-toluic acid by taking advantage of difference between in their solubility to water
04/19/2000EP0994114A2 Process for the preparation of imidazoquinazolinone derivatives
04/19/2000CN1251086A Process for producing carboxylic acid esters and catalyst
04/06/2000WO2000001647A3 Production of organic compounds which are low in fluoride
04/05/2000EP0851852B1 Process for nitrating diphenyl ether compounds
04/05/2000EP0833811B1 A process for the preparation of esters
04/05/2000CN1249741A Process for purification of substd. p-nitrodiphenylethers
03/2000
03/30/2000WO2000017132A1 Method for producing olefins
03/30/2000CA2345017A1 Method for producing olefins
03/29/2000EP0988276A1 Process for the preparation of thioether-substituted aromatic ketones
03/28/2000US6042723 Mono- and di-derivatives of cyclodextrins, synthesis thereof and purification and use thereof in a support
03/23/2000WO2000015599A1 Process for producing stereoselective nitro compounds
03/23/2000DE19843012A1 (Hetero)aryl-substituted olefin preparation for use e.g. as polymer or drug intermediate, by Heck reaction using inexpensive catalyst system of divalent palladium compound and nitrogen-containing additive
03/21/2000US6040274 2-Aroylcyclohexanediones, their preparation and their use as herbicides or plant growth-regulating agents
03/07/2000US6034287 Process for the production of nitroarenes with high para-selectivity from monosubstituted aromatic hydrocarbons using alumino-silicates as catalysts
02/2000
02/29/2000US6031126 Rearranging a hydrazobenzene compound to form a diaminodiphenyl compound, diazotising, catalytic reacting with a styryl compound to form a distyryl-biphenyl fluorescent whitening agent
02/22/2000US6028219 Process for the nitration of diphenylethers
02/09/2000EP0783487B1 2-aroylcyclohexandiones, process for preparing the same and their use as herbicides or plant growth regulators
02/09/2000CN1244139A Amidophosphonium-salt-containing catalyst for halogen-fluorine exchange reactions
02/08/2000US6023000 Process for the preparation of aldehydes and ketones
02/02/2000EP0976718A2 Improved nitration process
02/02/2000EP0975578A1 Production of aromatic amines by means of novel hydrogenation catalysts
01/2000
01/27/2000WO2000003971A1 Process for producing 4-substituted-2-nitro-fluorobenzenes
01/25/2000US6017965 Compounds active at a novel site on receptor-operated calcium channels useful for treatment of neurological disorders and diseases
01/19/2000EP0972763A1 Process for the preparation of substituted indoles
01/19/2000EP0972759A1 Process for producing carboxylic acid esters and catalyst
01/19/2000EP0971875A1 Process for the purification of substituted p-nitrodiphenylethers
01/19/2000EP0971791A1 Apparatus and methods for the preparation of chemical compounds
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