Patents
Patents for C07B 41 - Formation or introduction of functional groups containing oxygen (3,087)
01/1993
01/12/1993CA1312614C Process for the preparation of carboxylic acid chlorides
01/12/1993CA1312612C Method of preparing n-acryloyl-–-amino acids
01/05/1993US5177248 Process of forming polysubstituted fullerenes
12/1992
12/09/1992CN1019387B Process for prepn. of propanol derivatives
12/01/1992CA1310980C Process for the oxidation of hydrocarbons utilizing partitioning of oxidizing gas
11/1992
11/18/1992CN1019110B Transition metal complex catalyze reaction
11/18/1992CN1019104B Bi-ester of phosphite
11/17/1992US5164527 Zeolite catalysts
11/17/1992US5164497 Decarboxylation processes using mixed metal oxide catalysts
11/17/1992US5164488 Formation of liposome dispersion
11/17/1992CA1310332C Impurity removal from carbon monoxide and/or hydrogen- containing streams
11/12/1992WO1992019623A1 Highly reactive form of copper and reagents thereof
11/10/1992US5162589 Alkoxylation process catalyzed by sodium- or potassium barium phosphate
11/10/1992CA1310018C Process for cleaving aliphatic ether compounds
10/1992
10/29/1992WO1992009545A3 New methods for the catalytic reduction of organic substrates
10/15/1992WO1992017430A1 Alkoxylation of active hydrogen compounds
10/08/1992DE4110835A1 Verfahren zur herstellung hydrophobierter doppelschichthydroxid-verbindungen A process for preparing hydrophobicized double layer hydroxide compounds
10/05/1992WO1992017405A1 Process for producing hydrophobised double-layer hydroxide compounds
10/05/1992CA2107685A1 Process for producing hydrophobicized double-layer hydroxide compounds
09/1992
09/15/1992US5147929 In presence of 2,3,6-mesitylene-1-sulfonyl-3-nitro-1,2,4-triazolide
09/09/1992CN1018179B Hydrolysis of activated olefinic ketones and aldehydes
09/03/1992DE4123991C1 Prodn. of monomer-free ethoxylate(s) - is by catalytically converting substrates with ethylene oxide, and flushing supply line periodically with nitrogen@ gas
08/1992
08/25/1992CA1306597C Process for preparing halogen magnesium alanate and use thereof
08/05/1992CN1063277A Carbonylation of olefins
08/04/1992US5136089 Acylation of alkyl aromatic hydrocarbons
07/1992
07/29/1992EP0496562A1 Process for producing carboxylated compound
07/28/1992CA1305728C Hydrogenation process
07/28/1992CA1305723C Acylation of aromatics
07/22/1992EP0495547A2 Carbonylation of olefins
07/21/1992US5132204 Deprotecting and decomposition to generate light; immunoassay
07/21/1992CA1305491C Low pressure rhodium catalyzed hydroformylation of olefins
07/14/1992CA1305153C Optically active styrene derivatives, polymers obtained from these, complexes with iridium(i) and their use
07/07/1992US5128488 Phosphorus-metal complex catalyst
07/01/1992CN1062341A Alkoxylation process catalyzed by sodium-or potassium barium phosphate
06/1992
06/30/1992US5126493 With ethylene or propylene oxide; polycrystalline iron oxide catalyst
06/30/1992CA1304397C Process for the production of carboxylic acid esters
06/17/1992EP0490444A1 Alkoxylation process catalyzed by sodium- or potassium barium phosphate
06/17/1992EP0300018B1 Hydrogenation process
06/11/1992WO1992009545A2 New methods for the catalytic reduction of organic substrates
06/11/1992CA2096747A1 New methods for the catalytic reduction of organic substrates
06/09/1992US5120697 Reacting calcium metal or calcium containing compound, organic activator, oxyacid metal salt; polymerization catalysts
06/03/1992EP0488861A1 Process for the preparation of alkoxylated aromatic compounds
06/03/1992EP0488860A1 Method for the production of polyalkoxylated aromatic compounds
06/03/1992EP0488638A1 BF3 catalyzed acetylation of butylbenzene
06/02/1992US5118870 Alkoxylation process catalyzed by rare earth and phosphorus-containing xerogels
06/02/1992US5118860 Acetylating with acetic acid, acetic anhydride, acetyle fluoride, chloride or bromide
06/02/1992US5118856 Preparation of cyclohexane-dione derivatives
06/02/1992US5118833 Oxidizing alpha-hydroxy-carboxylic acid ester with hypochlorous acid in the presence of a nitroxy radical
06/02/1992US5118650 Alkylation of alkylene oxide; narrow molecular weight distribution
05/1992
05/28/1992CA2055924A1 Bf3 catalyzed acylation of aromatic compounds
05/26/1992US5117064 Selective
05/26/1992US5116994 Modified sytrene-divinylbenzene polymer
05/19/1992US5114900 Alkoxylation using modified calcium-containing bimetallic or polymetallic catalysts
05/19/1992CA1301196C Method of reducing nitrile into a corresponding alcohol
05/19/1992CA1301191C Process for the preparation of aryl perfluoroalkyl ketones
05/12/1992US5112990 Oxidation of cyclic sulfites produced from dihydroxy compounds
05/12/1992US5112789 Alkoxylation catalysis
05/12/1992US5112788 Complex catalysts for making ethylene oxide adducts
05/05/1992US5110961 Catalytic process for the synthesis of an alcohol, new metal complexes and process for the synthesis of these complexes
04/1992
04/14/1992US5104987 Reacting with alkylene carbonate, using mixed metal oxide catalyst; decarboxylation, decyclization
04/14/1992CA1298846C Process for the asymetrical hydrogenation of carbonyl compounds and compounds thus obtained
04/14/1992CA1298843C Camphor derivatives, their preparation and their use
04/08/1992EP0479363A2 Alkoxylation of active hydrogen-containing compounds
04/01/1992EP0478075A2 Decarboxylation processes
04/01/1992EP0478074A2 Alkoxylation of carboxylated compounds
04/01/1992EP0478073A2 Processes for the preparation of carboxylated compounds
04/01/1992EP0478062A1 In-situ preparation of diisopinocampheyl chloroborane
03/1992
03/31/1992US5101068 Monofluoromethylation of organic compounds, reaction with amino acids
03/25/1992CA2050820A1 In-situ preparation of diisopinocamphenyl chloroborane
03/21/1992CA2051595A1 Alkoxylation of carboxylated compounds
03/21/1992CA2051488A1 Processes for the preparation of carboxylated compounds
03/21/1992CA2051487A1 Alkoxylation of active hydrogen-containing compounds
03/18/1992EP0475513A1 Process for preparing quaternary ammonium carbonate esters
03/15/1992CA2051049A1 Process for preparing quaternary ammonium carbonate esters
02/1992
02/25/1992US5091597 Using zinc, cadmium, mercury or tin halide promoters
02/11/1992US5087731 Alkoxycarbonylation process
02/05/1992EP0470000A1 Allylation reagent and method of synthesis using it
01/1992
01/29/1992EP0468840A2 Process for the selective epoxidation of unsaturated (meth)acrylates, new functional (meth)acrylates so obtained and their use in the synthesis of new polymers
01/28/1992US5084569 Trioxy bicyclic compounds useful for preparing optically active carboxylic acids
01/21/1992US5082976 Oxidation of aminostyrenes
01/15/1992EP0466319A1 Hydroxyalkylation of phenols or thiophenols with cyclic organic carbonates using triorganophosphine catalysts
01/07/1992CA2256214A1 Process for selective epoxidation of unsaturated (meth)-acrylates, novel functional (meth)acrylates thus obtained, and application to the synthesis of novel polymers
12/1991
12/18/1991CN1015104B Deprotection of allylic esters and ethers
11/1991
11/27/1991EP0457912A1 METHOD FOR THE PREPARATION OF $g(a),$g(b)-UNSATURATED KETONES
11/26/1991US5068408 Oxidation of alcohols, thiols, sulfides, aldehydes, amines, ketones, acids, amides, ethers, esters and activated carbon-carb on double bonds
11/19/1991US5066815 Asymmetric hydrogenation of ketone, ruthenium-phosphine catalyst
11/12/1991CA1292002C Propanol derivatives
11/06/1991EP0455332A2 Acylation or sulphonylation of aromatic compounds
10/1991
10/22/1991US5059723 Efficiency; purity
10/16/1991EP0451714A1 Process for the acylation of alkyl aromatics
10/13/1991CA2040081A1 Acylation of alkyl aromatic hydrocarbons
10/09/1991EP0449966A1 Low pressure rhodium catalyzed hydroformylation of olefins
10/03/1991WO1991015441A1 Use of hydrophobised hydrotalcites as catalysts for ethoxylation or propoxylation
10/03/1991CA2079806A1 Use of hydrophobised hydrotalcites as catalysts for ethoxylation or propoxylation
10/02/1991EP0448602A1 Method for functionalization of nucleophiles
10/02/1991CN1014146B Carbonylation process improvement
10/01/1991US5053380 Cu-al catalyst for hydrogenation
09/1991
09/25/1991EP0448006A2 Process for the preparation of acylales
09/10/1991US5047557 Alcohol, amine intermediates
09/05/1991WO1991013051A1 Use of strontium and/or barium acetyl acetonates as catalysts for the ethoxylation of propoxylation of compounds with active h atoms
1 ... 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31