| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 01/12/1993 | US5179231 Preparation of hexene-1,6-dioic acids |
| 01/12/1993 | US5179230 Decyclization, hydrolysis of n-substituted tetrafluorothphalimide |
| 01/12/1993 | US5179229 Preparation of 2,2-diorgano-3-arylpropionic acids and esters thereof |
| 01/12/1993 | US5179225 Carbonylation catalyst system |
| 01/12/1993 | US5179218 Reacting corresponding alkanol with free radical nitroxide, nitric acid, bromide ion in presence of oxidant |
| 01/12/1993 | US5179215 Process for the production of petrochemicals |
| 01/12/1993 | US5179208 Process for preparing d-2-(6-methoxy-2-naphthyl)-propionic acid and intermediate thereof |
| 01/12/1993 | CA1312623C Process for preparing 1-hydroxy-3-oxa-1,2,4,5-pentane tetracarboxylic acid and 3,6-dioxa-1,2,4,5,7,8-octane hexacarboxylic acid |
| 01/12/1993 | CA1312620C Process for the carbonylation of olefinically unsaturated compounds with a palladium catalyst |
| 01/12/1993 | CA1312618C Advanced process for the fabrication of methyl methacrylate from isobutyric acid |
| 01/12/1993 | CA1312614C Process for the preparation of carboxylic acid chlorides |
| 01/11/1993 | CA2071596A1 Perfluoroalkyl halides and derivatives |
| 01/07/1993 | WO1993000321A1 Method for the preparation of an aluminium triformate solution containing alkali metals and/or alkaline-earth metals, highly concentrated aluminium triformate solutions containing alkali metals and/or alkaline-earth metals, and the use of such solutions |
| 01/07/1993 | WO1993000319A1 Oxidation of alkylaromatics |
| 01/07/1993 | DE4121959A1 Supported catalyst for acetic acid prodn. by carbonylation of methanol - with phosphonic acid deriv. contg. dissimilar chelating gps. as adhesion promoter |
| 01/07/1993 | CA2112110A1 Oxidation of alkylaromatics |
| 01/05/1993 | US5177260 Method for production of acrylic acid |
| 01/05/1993 | US5177258 Method of production of biaryl derivatives |
| 01/05/1993 | US5177257 Racemic separation, quinine salt formation |
| 01/05/1993 | US5177253 Diphosphine catalyst |
| 01/05/1993 | US5177245 Process for preparing cyclohexenylhydroquinone |
| 01/05/1993 | US5177231 Asymmetric hydrogenation of aromatic-substituted olefins using cationic ruthenium(III) complexes |
| 01/05/1993 | US5177228 Rhodium metal complex catalyst containing a trialkylphosphine ligand |
| 01/05/1993 | US5177220 Method for the asymmetric hydrogenation of α-ketocarbonyl compounds to optically active α-hydroxycarbonyl compounds |
| 01/05/1993 | US5177049 Oxidation of tertiary-alkyl substituted aromatics |
| 01/05/1993 | CA1312340C Process for the preparation of 2,2- bisphenylhexafluoropropane |
| 12/30/1992 | EP0520972A1 Process for the transformation of vanadium/phosphorus mixed oxide catalyst precursors into active catalysts for the production of maleic anhydride |
| 12/30/1992 | EP0520821A1 Oligohexafluoropropylene oxide derivative and process of producing the same |
| 12/30/1992 | EP0520815A2 Method for producing ortho-alkoxybenzoic acid |
| 12/30/1992 | EP0520762A2 Process for concurrently producing aryl formate and aromatic carboxylic acid |
| 12/29/1992 | US5175364 Preparation of carbonyl halides |
| 12/29/1992 | US5175363 Method for purification of carboxylic acids and anhydrides |
| 12/29/1992 | US5175362 Acid catalyzed hydrolysis, oxidation |
| 12/29/1992 | US5175360 Reacting alkoxyalkanol with solubilized stable free radical nitroxide in presence of chlorine-containing oxidant |
| 12/29/1992 | US5175359 Oxidation of corresponding alkyoxy alkanol in presence of a stable free radical nitroxide, a nitrogen oxides generating compound a chloride ion containing compound and an oxidant |
| 12/29/1992 | US5175358 Heating furfuryl alcohol in presence of protonic acid |
| 12/29/1992 | US5175357 Di or tri-2,4,4-trimethylpentyl-n-octyl phosphine oxide and a high molecular weight ketone |
| 12/29/1992 | US5175355 Improved process for recovery of purified terephthalic acid |
| 12/29/1992 | US5175354 Reacting the potassium salt with benzenecarboxylic acid |
| 12/29/1992 | US5175353 2-(2'-aminoethoxy)-ethanol salt of dicamba |
| 12/29/1992 | US5175352 Process for preparing 2,6-naphthalenedicarboxylic acid |
| 12/29/1992 | US5175345 Process for producing 2-fluoroisobutyric acid ester |
| 12/29/1992 | US5175322 Double decomposition of alkali soap and an inorganic metal salt |
| 12/29/1992 | US5175311 Method of enantioselective cyclopropanation using chiral catalysts |
| 12/29/1992 | CA1312086C Benzoquinone derivatives, their production and use |
| 12/28/1992 | WO1993000166A1 Process for the transformation of vanadium/phosphorus mixed oxide catalyst precursors into active catalysts for the production of maleic anhydride |
| 12/28/1992 | CA2103448A1 Process for the transformation of vanadium/phosphorus mixed oxide catalyst precursors into active catalysts for the production of maleic anhydride |
| 12/24/1992 | DE4120704A1 Malonic acid prodn. in high yield and purity - comprises high temp. saponification of malonic acid precursor, treatment with cation exchanger and water removal |
| 12/23/1992 | EP0519569A2 Catalytic oxidation of hydrocarbons |
| 12/23/1992 | CN1067242A Calcium citrate anticaking agent |
| 12/23/1992 | CN1067189A Process for preparing v-p-zr mixed oxide catalyst used for producing cis-butene dioic acid anhydride |
| 12/22/1992 | US5173156 Dehydration of formic acid by extractive distillation |
| 12/22/1992 | CA1311766C Acid accelerated hydrocarboxylation |
| 12/22/1992 | CA1311740C Method for manufacture of phthalic anhydride |
| 12/16/1992 | EP0518696A2 Process for preparing a polybutylcarboxylic acid |
| 12/16/1992 | EP0518562A2 Process for removing acetone from a mixture comprising acetone, methyl acetate and methyl iodide |
| 12/16/1992 | EP0518548A2 Catalytic oxidation of ethane to acetic acid |
| 12/16/1992 | EP0518387A2 Method and composition providing enhanced chemiluminescence from 1,2-dioxetanes |
| 12/16/1992 | EP0518110A2 Process for the preparation of pure enatiomers of 4-[4-(4'-tert.butylphenyl)-2-hydroxybutoxy]-benzoic acid and its alkyl ester |
| 12/16/1992 | EP0517726A1 Process for the prevention of corrosion on metal materials in the production of carboxylic acid chlorides |
| 12/16/1992 | EP0491004A4 A process for the production of 4,4'-dialkylated biphenyl compounds |
| 12/16/1992 | CN1067046A Process for extraction of dicarboxylic acid and its esters from waste liquid after production of hexandioic acid |
| 12/16/1992 | CN1019484B Synthesizing 4,4' diphenyl ether diformic acid from p-nitrophenyl formic acid |
| 12/16/1992 | CN1019483B Method for prcducing hexanoic acid |
| 12/15/1992 | US5171892 Chiral phospholanes via chiral 1,4-diol cyclic sulfates |
| 12/15/1992 | US5171891 Using sulfur containing oxy acids and their salts |
| 12/15/1992 | US5171888 Mixing with sources of manganese and a phenylene diamine |
| 12/15/1992 | US5171887 Ion exchanging |
| 12/15/1992 | US5171886 Michael condensation of salts of maleic and malic acids in presence of calcium ion catalyst; reacting and reuse of by-products; hydration of sodium hydrogen maleate; detergent builders |
| 12/15/1992 | US5171884 Preparation process for glyoxylic acid by catalytic oxidation of glyoxal in an aqueous medium in the presence of catalytic quantities of platinum |
| 12/15/1992 | US5171881 Liquid phase catalytic oxidation of pseudocumene in acetic acid in two stages with different temperatures and catalyst compositions |
| 12/15/1992 | US5171880 Sulfur or oxidized sulfur in a base |
| 12/13/1992 | CA2070560A1 Process for removing acetone from a mixture comprising acetone, methyl acetate and methyl iodide |
| 12/10/1992 | WO1992021440A1 Molded or supported catalyst excellent in mechanical strengths for use in synthesizing methacrolein and methacrylic acid and production thereof |
| 12/09/1992 | EP0516935A2 Process for preparing phthalic anhydride nearly exempt from naphthoquinone from naphthalene |
| 12/09/1992 | EP0190233B1 New carbacyclines, preparation thereof and drug containing them |
| 12/09/1992 | CN1066841A Improved process for recovery of purified terephthalic acid |
| 12/09/1992 | CN1066840A Process of linear dicarbonylation for difundtionalized butene |
| 12/08/1992 | US5169985 Continuous method for making isobutyric acid |
| 12/08/1992 | US5169982 Process for separating iodine and its compounds from the products obtained on subjecting dimethylether, methyl acetate or methanol to carbonylation |
| 12/08/1992 | US5169978 Polyester monomer |
| 12/08/1992 | US5169967 Aluminum magnesium hydroxy fatty acid compounds and thermostable lipogels including same |
| 12/08/1992 | US5169820 Catalyst for producing phthalic anhydride |
| 12/08/1992 | CA1311247C Removal of iodine or iodide impurities |
| 12/08/1992 | CA1311246C Production of formic acid from a nitrogenous base, carbon dioxide and hydrogen |
| 12/08/1992 | CA1311243C PHARMACEUTICAL COMPOSITIONS CONTAINING .alpha.-HALOGENATED DICARBOXYLIC ACIDS |
| 12/03/1992 | DE4217563A1 New tert.-butyl-fluorene cpds. - useful as antiviral and fluorenyl-metallocene intermediates and as polyamide and polyurea monomers |
| 12/03/1992 | DE4118342A1 Water-soluble poly:aromatic acids prepn. for prodn. of carbon@ adsorbents - by converting mesophase pitch into swellable prod. with complexing agent, followed by washing and treating with oxidising agent |
| 12/03/1992 | DE4117255A1 Enzymatic hydrolysis of carboxylic acid derivs. - by forming a soln. of the acid deriv. in an organic solvent with only slight water miscibility, saturating the soln. with water and contacting with a hydrolase |
| 12/02/1992 | EP0515589A1 Manufacture of 2,6-hydroxynaphthoic acid |
| 12/02/1992 | EP0172906B2 Process for making substituted carboxylic acids and derivatives thereof |
| 12/02/1992 | CN1066651A Process for preparation of arude terphthalic acid suitable for reduction to prepane purified terephthalic acid |
| 12/02/1992 | CN1066650A Process for synthesizing hydroxyacetic acid |
| 12/01/1992 | US5168090 Shaped oxidation catalyst structures for the production of maleic anhydride |
| 12/01/1992 | US5168055 Fermentation and purification process for succinic acid |
| 12/01/1992 | US5167774 Dimethyl sulfoxide as extractive agent |
| 12/01/1992 | CA1310977C Process for the manufacture of benzoic acid and salts thereof |
| 12/01/1992 | CA1310954C Process for the preparation of carboxylic acids or of esters thereof |
| 11/30/1992 | WO1992021642A1 Recovery of acetyl values from ethylidene diacetate |
| 11/30/1992 | CA2108970A1 Recovery of acetyl values from ethylidene diacetate |