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)
09/1990
09/10/1990WO1990010617A1 Process for producing 2-ethylhexyl-p-methoxycinnamate
09/10/1990CA2047679A1 Process for producing 2-ethylhexyl-p-methoxycinnamate
09/09/1990CA2011782A1 Process for preparing benzylpyruvic acids and esters
09/07/1990WO1990010616A1 Process for the manufacture of acryloyl chloride
09/07/1990WO1990010614A1 PRODUCTION OF α-(3-BENZOYLPHENYL)PROPIONIC ACID DERIVATIVE
09/07/1990WO1990009976A1 Method of synthesis of hydroxy-substituted-4-alkoxyphenylacetic acids
09/07/1990WO1990009975A1 Aldehyde oxidation
09/07/1990WO1990009846A1 Heterogeneous catalyst, process for producing it and its use
09/05/1990EP0385826A1 Method of extracting normal butyric acid obtained by fermentation
09/05/1990EP0385253A1 Process for preparing 2,4,5-trifluorobenzoic acid
09/05/1990EP0377637A4 Process for the preparation of oxy-diphthalic anhydrides
09/05/1990CN1045096A Process for preparing carboxylie acids
09/04/1990US4954651 Process for preparing trans-2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane carboxylic acid halide
09/04/1990US4954650 Method for production of methacrylic acid
09/04/1990US4954476 Method of making catalysts from titanium oxide
09/04/1990US4954231 Functional chlorofluoro compounds and their preparation
09/04/1990CA1273643A1 Process for producing z-2-methyl-2-butenoic acid
09/04/1990CA1273630A1 Deprotection of allylic esters and ethers
08/1990
08/29/1990EP0384755A1 Method for regenerating catalyst for oxidative dehydrogenation of isobutyric acid
08/29/1990EP0384749A1 Process for producing catalyst precursor and corresponding catalyst
08/29/1990EP0384652A1 Process for preparing carboxylic acids
08/29/1990EP0186694B1 Process for recovery of methacrylic acid
08/29/1990CN1009340B Production method of composite oxide catalysts
08/29/1990CN1009339B Process for production of composite oxide catalysts
08/28/1990US4952727 Catalytic vapor phase carbonylation of ester or ether
08/28/1990US4952724 Reacting phenolates with salts of monohaloacetic acid
08/28/1990US4952721 Process for oxidizing esters of methyl-substituted phenol compounds to aromatic carboxylic acids
08/28/1990US4952710 Cyclopenteneheptenoic acid derivatives and method of preparation thereof
08/28/1990US4952708 Method for preparing biaryl compounds
08/28/1990CA1273364A1 Process for dimerization of aromatic halide compounds
08/28/1990CA1273349A1 Leukotriene antagonists
08/28/1990CA1273316A1 Process for neutralizing perfluoropolyethers
08/27/1990CA2010158A1 Process for preparing 2,4,5-trifluorobenzoic acid
08/23/1990DE3904590A1 Process for separating mixtures of halocarboxylic acids by means of extraction
08/23/1990CA2009739A1 Process for preparing carboxylic acids
08/22/1990EP0383224A2 Shell-and-tube apparatus having an intermediate tube plate
08/22/1990EP0383128A1 Process for the fluorination of acrylic acid and derivatives thereof, and fluorinated esters of 2,3-difluoropropionic acid
08/21/1990US4950813 Preparation of substituted benzotrichlorides
08/21/1990US4950788 Process for producing unsaturated carboxylic acids
08/21/1990US4950787 Chemical process
08/21/1990US4950786 Catalyst of cobalt, manganese, bromine, cerium, iron and acetate components
08/21/1990US4950781 Preparation process for aromatic hydroxycarboxylic acid
08/21/1990US4950769 Process for the manufacture of maleic anhydride utilizing peroxides to improve catalytic activity
08/21/1990US4950686 Anti-mycoplasma agent
08/21/1990US4950669 Side effect reduction
08/21/1990US4950429 Preparation of 6-aminocaproic acid
08/21/1990CA1273020A1 Preparation of aromatic carbonyl compounds
08/16/1990EP0381988A1 Process for removing metallic corrosion products from a contaminated catalyst solution used in the carbonylation of methanol and/or dimethyl acetate and/or dimethyl ether
08/16/1990EP0381746A1 Thiol-reactive cross-linking reagents
08/16/1990EP0381704A1 Process for preparing 2-acetonaphthones
08/16/1990DE3904327A1 Process for the preparation of trans-1,3-substituted cyclobutane derivatives
08/14/1990US4948921 Catalytic oxidation of pseudocumene with air in the presence of acetic acid
08/14/1990US4948920 Process for the preparation of phenylpyruvic acid from benzyl chloride
08/14/1990US4948904 Process for the preparation of oxydiphthalic anhydrides
08/14/1990US4948471 Separation of 4-methyl-2-pentanone from formic or acetic acid by extractive distillation with sulfolane
08/14/1990US4948469 Separation of formic acid from dioxane by extractive distillation with amides
08/14/1990CA1272737A1 Oxidation of 2-arylpropanals
08/14/1990CA1272731A1 Anthracene derivatives
08/14/1990CA1272723A1 Process for the preparation of new phenol derivatives
08/09/1990WO1990006669A3 An improved process for production of polycarboxylic aromatic acids
08/09/1990DE3903664A1 Process for the preparation of formic acid from carbon monoxide and water
08/08/1990EP0381362A1 Process for producing maleic anhydride
08/08/1990EP0380911A1 Process for the purification and recovery of a catalyst solution contaminated in the carbonylation of methanol and/or methyl acetate and/or dimethyl ether
08/08/1990EP0290319B1 1-Fluoro-1-halogeno-dioxa-3,6-bicyclo[4.1.0]heptane, preparation process and use
08/08/1990EP0216884B1 Photo-initiator for the photo-polymerization of unsaturated systems
08/08/1990CN1009084B Prepn. of bromofluoacetic acid
08/07/1990US4946997 Using acid anhydride and its conjugate base
08/07/1990US4946985 Reacting a halophthalic anhydride with water and alkali metal compound; copper catalyst
08/07/1990US4946970 Suppression of trimellitic anhydride dust
08/07/1990US4946969 Heating with two equivalents of dienophile
08/07/1990US4946868 Antimicrobial compositions containing benzoic acid derivatives for use as disinfectants, drugs or preservative agents
08/01/1990EP0380316A2 Preparation of alpha-methylareneacetic acids
08/01/1990EP0380213A2 Precious metal salt solutions and precious metal catalysts
08/01/1990EP0380129A1 Process for preparing alpha-bromo-acyl-fluorides
08/01/1990EP0379987A2 Process for the preparation of alpha-arylalkanoic acids
08/01/1990EP0379982A1 Method of preparation of 8-hydroxyoctanoic acid
08/01/1990EP0379971A2 Continuous process for the manufacture of isobutyric acid
08/01/1990EP0379716A1 Chemiluminescent 1,2-dioxetane compounds
08/01/1990EP0379691A1 Process for preparing unsaturated carboxylic acid or ester thereof
08/01/1990CN1044281A Synthesis and application of diphosphonate ester
07/1990
07/31/1990US4945180 Process for the preparation of E-2-propyl-2-pentenoic acid and physiologically compatible salts thereof
07/31/1990US4945075 Oxidative secondary rhodium recovery process
07/31/1990US4944927 Solvent extraction using acetic acid and water mixture
07/31/1990CA1272209A1 Dehalogenation process
07/27/1990CA2007392A1 Process for the preparation of .alpha.-arylalkanoic acids
07/27/1990CA2006963A1 Precious metal salt solutions and precious metal catalysts
07/26/1990WO1990008126A1 Resolution process
07/26/1990WO1990008125A2 Method of preparation of 8-hydroxyoctanoic acid
07/25/1990EP0379288A1 Process and intermediates for isopropyl 3S-amino-2R-hydroxyalkanoates
07/25/1990EP0378769A1 Method for the dimerisation of hexafluoropropene oxide
07/25/1990EP0378768A1 Process for the continuous oligomerisation of hexafluoropropene oxide
07/25/1990EP0378767A1 Method for the oligomerisation of hexafluoropropene oxide
07/25/1990CN1044092A Process for dimerization of hexafluoropropene oxide
07/25/1990CN1044091A Process for continuous oligomerization hexafluoropropene oxide
07/25/1990CN1044090A Process for oligomerization of hexafluoropropene
07/25/1990CN1044089A Preparation of 2-chloroterephthaloyl chloride
07/25/1990CN1008884B Rhodium on carbon catalyst
07/24/1990US4943645 Benzoquinone derivatives and production thereof
07/19/1990CA2007906A1 Process and intermediates for isopropyl 3s-amino-2r-hydroxy-alkanoates
07/18/1990EP0378366A1 Preparation of 2-chloroterephthaloyl chloride
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