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)
11/1981
11/04/1981EP0038987A1 Process for preparing acyl cyanides
11/03/1981US4298760 Reaction of a benzylidene glycine ester with a 1,2-dihaloethane followed by hydrolysis
11/03/1981US4298759 Oxidation catalyst residues
11/03/1981US4298755 Catalytic oxydehydrogenation process
11/03/1981US4298751 Cyclically substituted fulvalenophanes
11/03/1981US4298533 Production of maleic anhydride
11/03/1981US4298530 From phthalic anhydride and malonic acid in a solvent and in the presence of a metal compound catalyst
11/03/1981CA1111862A1 Process for preparing cyclohexanecarboxylic acid
10/1981
10/28/1981EP0038735A1 Method for the preparation of compounds having a perfluoroalkyl group, in acid media containing zinc
10/28/1981EP0038343A1 Substituted carboxylic ceto-acids, process for the preparation thereof, use thereof and medicinal compositions containing them.
10/27/1981US4297509 Process for preparing alkali metal salts 3-amino-2, 5-dichlorobenzoic acid
10/27/1981US4297508 Process for producing 2 hydroxy-naphthalene-3-carboxylic acid
10/27/1981US4297507 Using a corrosion-resistant zirconium-lined chemical reactor for oxidizing p-tolualdehyde
10/27/1981US4297505 Process for the preparation of pentachloro-3-butenoic acid esters
10/27/1981US4297301 A 4h-pyran-4-one or n-alkyl-4-pyridone catalyst for the phosgenation of an acid or anhydride
10/27/1981US4297283 Heating with a gaseous mixture of chlorine and inert gas to obtain 4-chlorophthalic anhydride
10/27/1981US4297275 Inhibitors of mammalian collagenase
10/27/1981US4297247 Absorption by catalyst supports of water in less than mayimum saturation amounts; adhesion; oxidation catalysts
10/27/1981CA1111441A1 Polyene compounds
10/21/1981EP0038317A1 Process for producing chemical substances from acidic hydrolysates of plants
10/21/1981EP0038271A2 Cyclopropane carboxylic acid derivatives, their preparation and use in combating parasites of plants and animals, their compositions and intermediates
10/21/1981EP0038223A1 Process for the preparation of trifluoromethylbenzoyl halides
10/21/1981EP0038131A2 Bicyclooctane compounds, their production, compositions containing them and their pharmaceutical use
10/20/1981US4296251 Ozonization of 2-caren-4-ol, 2-caren-4-one and/or 3-caren-2-ol; reacting the ozonides with hydrogen peroxide
10/20/1981US4296245 Treating crude benzyl benzoate with hydrogen or metal, saponification
10/20/1981US4296244 (3-Trifluoromethylphenyl)-alpha-hydroxyacetic acid and process for preparation
10/20/1981US4296243 Process for producing sorbic acid or its derivatives
10/20/1981US4296241 Reacting a 3-formyl derivative thereof with a dichloromethane phosphonic acid
10/20/1981CA1111066A1 Production of pure acetyl chloride
10/20/1981CA1111065A1 Production of acetic anhydride
10/14/1981EP0037698A1 Benzaldehyde derivatives for use as a chemical intermediate
10/14/1981EP0037666A2 Thermoplastic polyester resin composition
10/14/1981EP0037597A1 Novel cyan-forming couplers and photographic elements containing such couplers
10/14/1981EP0037492A1 Catalyst for the preparation of phthalic anhydride
10/13/1981US4294977 Process for producing aromatic carboxylic acids
10/13/1981US4294777 Color-stabilized aromatic carboxylic acid chlorides and a process for their preparation
10/13/1981US4294771 Salt formation
10/13/1981US4294770 Salt formation, hydrolysis
10/13/1981US4294766 Preparation of pure potassium ribonate and ribonolactone
10/13/1981US4294765 Cis-lactone pyrethroid intermediates
10/13/1981US4294722 Preparation of vanadium phosphorus catalysts
10/13/1981CA1110655A1 Process for the manufacture of glycolic acid
10/13/1981CA1110654A1 Camphor-treated benzylidenes; process for their preparation and cosmetic substances holding same
10/13/1981CA1110651A1 Phenoxy-phenoxy-alkane-carboxylic acid derivatives
10/13/1981CA1110637A1 Reduction of 2,5-diketogluconic acid
10/13/1981CA1110635A1 Aromatic acetic acid derivatives having sulfur atom at alpha-position and process for their preparation
10/07/1981EP0037373A1 Process for the elimination of alkyl and alkenyl groups
10/07/1981EP0037354A1 Process for the production of acetic acid by carbonylation
10/07/1981EP0037327A1 Derivates of 3-formyl-4-methylpentanoic acid, their preparation and their use in the preparation of substituted 3-formyl-but-3-en-1-oic acid
10/07/1981EP0037224A1 Rare earth metal carboxylates, their use as antimicrobial agents, and medicinal, cosmetic and cleansing compositions containing them
10/07/1981EP0037020A1 Catalyst for the preparation of maleic anhydride
10/07/1981EP0037015A2 Process for the preparation of 2-chloro-acetoacetic acid esters
10/06/1981US4293704 Novel 2-substituted-3,4-epoxycyclopentan-1-ones, 2-substituted-3,4-epoxycyclopentan-1-ols, and various 2-substituted-cyclopentenones
10/06/1981US4293498 Preparation of maleic anhydride
10/06/1981US4293443 Consisting of mixed oxides
10/06/1981CA1110273A1 Carbonylation process
10/06/1981CA1110272A1 4-hydroxy phenylacetic acid
10/06/1981CA1110267A1 Di-carboxylic acid derivatives
10/06/1981CA1110245A1 Phenoxy valeric acids and derivatives thereof, useful as a herbicide
09/1981
09/30/1981EP0036741A2 Phosphine compounds, transition metal complexes thereof and use thereof as chiral hydrogenation catalysts
09/30/1981EP0036623A2 Method of preparing catalysts for the gas phase oxidation of saturated and/or unsaturated C4-hydrocarbons to maleic anhydride
09/30/1981EP0036436A1 Methyl 11alpha,15R-dihydroxy-16,18-methano-16-methyl-9-oxoprost-13E-en-1-oate, a process for its production and composition containing it
09/29/1981USRE30755 Process for the preparation of alkali-metal salts of carboxyalkoxy succinates
09/29/1981US4292449 Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
09/29/1981US4292437 Preparation of isobutyric acid and esters
09/29/1981US4292339 Stable concentrated lactic acid containing mixture
09/29/1981US4292326 Process for treatment of hyperpigmentary dermatoses
09/29/1981US4292203 Oxides of molybdenum and antimony
09/29/1981US4292202 From vanadyl sulfate, group vi b metal oxide, acetic anhydride, phosphorus pentoxide
09/29/1981US4292201 From vanadyl sulfate, cerium oxide or nitrate or thorium dioxide, acetic anhydride, phosphorus pentoxide
09/23/1981EP0036406A1 Process for the extraction of acetic acid, of formic acid and possibly of furfurol
09/23/1981EP0036352A1 Process for the preparation of trifluoromethyl benzenes from the corresponding trichloro or tribromo methyl benzenes
09/23/1981EP0036265A1 Method of optical resolution of (+/-)-2-amino-1-butanol and/or (+/-) -mandelic acid
09/23/1981EP0036255A1 Method of producing an improved poly-(amide-imide) resin
09/23/1981EP0036233A1 Process for the preparation of benzoic acid
09/23/1981EP0036159A1 4-(2,5-Dihydroxyphenyl-1) crotonic acid and its derivatives, and processes for the preparation of these compounds
09/23/1981EP0036087A2 Process for isolating rosmarinic acid from plants
09/22/1981US4291176 Production of insecticidally active vinyl-cyclopropane carboxylic acid esters
09/22/1981US4290974 Oxybenzylidene-bornanones, their preparation and their use in cosmetics
09/22/1981US4290965 Method of making 1123 labeled fatty acids
09/22/1981US4290817 Reacting by-product ammonium ions with naphthalene formaldehyde sulfonate
09/22/1981CA1109486A1 Process for the production of di-n-propylacetic acid
09/22/1981CA1109464A1 Vitamin b-12 derivative suitable for radiolabeling
09/17/1981WO1981002573A1 Process for the production of 6-hydroxy-2-naphthoic acid
09/16/1981EP0035754A2 Process for manufacturing 1,1-dichloro-alkenes
09/16/1981EP0035753A2 Process for manufacturing 1,1-dichloro-alkenes
09/16/1981EP0035724A2 Process for manufacturing 1,1-dihalogenated alkenes
09/16/1981EP0035708A2 Process for the preparation of 4-amino-6-tert.-butyl-3-methylthio-1,2,4-triazin-5(4H)-one
09/16/1981EP0035707A1 Process for the preparation of N-acyl amides of alpha-ketocarboxylic acids
09/15/1981US4289852 Cultures, sclerotinia
09/15/1981US4289711 Ester synthesis
09/15/1981US4289708 Precipitation of copper and manganese as oxalates
09/15/1981US4289654 Supported catalyst for the oxidation of acrolein into acrylic acid
09/15/1981US4289495 Oxidative dye compositions containing a 2,5-dihydroxyphenylalkanoic acid or salts thereof as antioxidant
09/09/1981EP0035458A1 Process for producing acetic acid by carbonylation
09/09/1981EP0035363A1 Indane derivatives, methods of their preparation and compositions containing them
09/09/1981EP0035305A2 Process for preparing esters of 2-(6'-methoxy-2'-naphtyl)-propionic acid via rearrangement of new ketals of 2-halo-1-(6'-methoxy-2'-naphtyl)-propan-1-one
09/09/1981EP0035173A1 Arrangement for transferring heat and for compensating profiles in plants for producing phthalic anhydride and maleic anhydride
09/08/1981US4288633 1-Hydroxymethyl-11-deoxy-16-hydroxy-prosten-1-ol-derivatives
09/08/1981US4288632 1-Hydroxymethyl-11,16-dihydroxy-prosten-1-ol derivatives
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