Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides
Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
10/1990
10/30/1990US4966992 Process for production of aromatic hydroxycarboxylic acid
10/30/1990US4966990 Oxidative dehydrogenation of isobutyric or butyric acid ester
10/30/1990US4966984 Heating in presence of superactive bleaching clay
10/30/1990US4966877 Method for making heteropolyacid catalysts and catalysts made by the method
10/30/1990CA1275651C Intermediates for the production of epipodophyllotoxin and related compounds and processes for the preparation and use thereof
10/29/1990CA2015578A1 Substituted biphenylcarboxylic acids, a process for their preparation and novel intermediates
10/24/1990EP0393923A1 6-Fluoroshikimic acid derivatives
10/24/1990EP0393086A1 Processes for preparing 3,4-dihydro 2-naphthanoic acid and 2-naphthanoic acid and esters thereof
10/24/1990CN1046326A Preparation of biphthalic acid by phase-transfer catalyzed oxidation method from phenanthrene
10/24/1990CN1046324A Recovery process of acrylic acid from waste oil containing acrylic acid
10/24/1990CN1046323A New process for preparation of oxalic acid by oxidation
10/23/1990US4965406 Liquid phase catalytic oxidation of toluene in presence of phase transfer agent
10/23/1990US4965405 Benzhydrylamine derivatives
10/23/1990US4965401 Process for the preparation of 2-propyl-2-pentenoic acid and its esters
10/23/1990US4965379 Fluoroepoxides and a process for production thereof
10/23/1990US4965372 Process and intermediates for isopropyl 3S-amino-2R-hydroxy-alkanoates
10/23/1990US4965235 Maleic anhydride catalysts and process for their manufacture
10/23/1990US4965234 Supported catalyst for the preparation of monocarboxylic anhydrides
10/19/1990WO1990012779A1 Method for obtaining carboxylic acids by reaction of alkanes and formiates
10/19/1990CA2029899A1 Process for the fabrication of carboxylic acids by reacting alcanes and formates
10/18/1990WO1990011993A1 Process for preparing sodium phenylpyruvate from calcium phenylpyruvate
10/18/1990WO1990011992A1 Method for obtaining a promoter of adhesion between rubber and metal cord
10/18/1990DE3912263A1 2,3,4-tri:chloro-5-fluoro-benzoic acid or benzoyl chloride prodn. - by selective chlorination of corresp. 2,4-di:chloro cpd., intermediates for quinolone carboxylic acid antibacterials
10/18/1990CA2014622A1 Compounds
10/17/1990EP0391942A1 Process for the preparation of aryloxyacetic acid
10/17/1990CN1046153A Preparation of glutaric acid derivatives
10/17/1990CN1046152A Process and catalyst for dehalogenation of alpha-halogenated carboxylic acids
10/17/1990CN1010012B Preparation of formic acid
10/16/1990US4963368 Oxidoreductase enzyme stabilized highly unsaturated fatty acids and derivatives of such acids
10/13/1990CA2012979A1 Process for the sodium phenylpyruvate from calcium phenylpyruvate
10/10/1990EP0391680A1 Process for preparing carboxylic acids
10/10/1990EP0391673A1 Preparation of glutaric acid derivatives
10/10/1990CN1045967A Prepn. of hexanedioic acid from hexane-dinitrile tar
10/10/1990CN1045966A Monomer containing hexafluorisopropyl, processes thereof and application
10/10/1990CN1009922B Method for prepn. of dobutamine salts
10/10/1990CN1009921B Prepn. of 2-hydroxynaphthalene-6-carboxylic acid
10/10/1990CN1009920B Halogenobenzoic acid derivatives and their prepn.
10/09/1990US4962233 Racemizing optically active materials with phosphorus, boron, or silicon iodides
10/09/1990US4962232 Hydrogen fluoride, antimony pentafluoride, bromine, or iodine
10/09/1990US4962230 Process for producing optically active carboxylic acid
10/09/1990US4962206 Reaction of 4-chlorotetrahydrophthalic anhydride with bromine in presence of iron or its salts and organic solvents
10/09/1990US4962192 Chemiluminescent 1,2-dioxetane compounds
10/09/1990US4961827 Obtaining very pure maleic anhydride from crude maleic anhydride
10/09/1990CA1275095A1 Carbacyclins, processes for their preparation and their use as pharmaceuticals
10/09/1990CA1275093A1 Carbacyclins, processes for their manufacture and their use as pharmaceuticals
10/07/1990WO1990011991A1 Process for preparing carboxylic acids
10/07/1990CA2028821A1 Process for preparing carboxylic acids
10/04/1990WO1990011271A1 New leukotriene b4 derivatives, process for producing them and their use as drugs
10/04/1990WO1990011270A1 Defluoridation of carboxylic acids using zeolites
10/04/1990WO1990011269A1 Process for the preparation of phenylpyruvic acid from benzyl chloride
10/03/1990EP0390273A1 Resolution of a carboxylic acid
10/03/1990EP0389961A1 Monomerides containing the hexafluoroisopropyl group, process for their preparation and their use
10/03/1990EP0389836A1 Process for the purification and recovery of contaminated solution of a catalyst from the carbonylation of methanol and/or methyl acetate and/or dimethyl ether
10/03/1990CN1045769A Substituted biphenyls
10/02/1990US4960926 Process for the carbonylation of olefinically unsaturated compounds with a palladium catalyst
10/02/1990US4960914 Method for the preparation of naphthoquinone
10/02/1990US4960905 Phenoxy phthalic anhydrides
10/02/1990US4960798 Methods for the treatment of angina
10/02/1990CA1274847A1 Process for the extractive separation of a carboxylic acid form an aqueous solution
10/01/1990WO1990011997A2 Inhibitors of mono-amine oxidase, process for their preparation, and their use in therapeutics.
10/01/1990CA2050590A1 Monoamine oxidase inhibitors and their preparation process and their use in therapy
09/1990
09/30/1990CA2013523A1 Resolution of a carboxylic acid
09/26/1990EP0389103A1 A process for the production and purification of succinic acid
09/26/1990EP0388732A2 Pentasubstituted phenyls
09/26/1990EP0370083A4 Seal for rotatable shaft
09/26/1990EP0203195B1 Fluorine-substituted phenyl benzoates and process for their prep aration
09/25/1990US4959498 Process for the preparation of monocarboxylic anhydrides
09/25/1990US4959496 Chemical process
09/25/1990US4959494 Oxidation of organic compounds with pyrochlore catalysts
09/25/1990US4959391 Lipoxygenase inhibitors, leukotriene diseases
09/25/1990US4959182 Method and compositions providing enhanced chemiluminescence from 1,2-dioxetanes
09/25/1990CA2012918A1 Hexafluoroisopropyl-containing monomers, process for their preparation and their use
09/25/1990CA1274541A1 Purification process of methacrylic acid
09/25/1990CA1274540A1 Functionalized perfluoropolyethers and process for the preparation thereof
09/25/1990CA1274539A1 Carbonylation process for the production of aromatic acids
09/25/1990CA1274538A1 Preparation of carboxylic di-esters or acids
09/24/1990CA2012980A1 Process for the preparation of phenylpyruvic acid from benzyl chloride
09/22/1990CA2012572A1 Substituted biphenyls
09/20/1990WO1990008125A3 Method of preparation of 8-hydroxyoctanoic acid
09/19/1990EP0387502A1 Process for recovering catalyst for use in preparing 1-(4-isobutylphenyl) propionic acid
09/18/1990US4958034 Alkenyl succinic anhydrides process
09/18/1990US4958002 Biphenyltetracarboxylic acid dehydration; by-product inhibition
09/18/1990US4957912 7 acylamidocarbacephem antibacterial agents
09/18/1990US4957894 Process for manufacture of maleic anhydride catalysts
09/18/1990US4957662 Method for purifying fatty acids
09/18/1990US4957595 Separation of 3-methyl-2-butanone from formic acid by extractive distillation with sulfolane
09/18/1990CA1274251A1 Process for the hydrocarboxylation of acetylenically unsaturated compounds
09/12/1990EP0387116A1 Process for preparing acrylyl chloride
09/12/1990EP0387058A1 Process for preparing benzylpyruvic acids and esters
09/12/1990EP0386834A1 Carbonylation catalyst system
09/12/1990EP0386833A1 Carbonylation catalyst system
09/12/1990CN1045234A Carbonylation catalyst system
09/11/1990US4956494 Oxidation with peroxides in the presence of hydrochloric acid
09/11/1990US4956493 Process for producing methacrylic ester
09/11/1990US4956490 Process for preparing benzylpyruvic acids and esters
09/11/1990US4956478 Alkenylation of maleic anhydride with alpha olefins, purification by distillation
09/11/1990US4956124 Bicyclic decanedioic acids, a process for their production, and their use as flotation aids
09/11/1990US4956052 Extraction water and organic compound mixture
09/11/1990CA1273929A1 N-(piperidinyl-alkyl)-carboxamides
09/11/1990CA1273919A1 Prostaglandin derivatives, their preparation and use
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