| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 07/20/1993 | CA1320490C Anti-inflammatory agents |
| 07/14/1993 | EP0551111A1 Process for purifying acrylic acid to high purity in the production of acrylic acid |
| 07/14/1993 | EP0550979A2 Process for the production of therephthalic acid |
| 07/14/1993 | EP0550889A1 Process for producing L-Ambrox |
| 07/14/1993 | EP0550475A1 Process for producing 3,3-dideutero-2-fluoracrylic acid and trideutero-2-fluoracrylic acid salts and their use |
| 07/14/1993 | CN1074146A Preparation of benzene anhydride catalyst |
| 07/13/1993 | US5227524 Process for purifying acetic acid and/or acetic anhydride |
| 07/13/1993 | US5227523 Rhodium catalyst, iodide promoter |
| 07/13/1993 | US5227522 Preparation of adipic acid by hydrocarboxylation of pentenic acids |
| 07/13/1993 | US5227521 Preparation of trialkylacetic acids, particularly of pivalic acid, using lewis acid catalysts |
| 07/13/1993 | US5227520 Distillation, iodide promoter, rhodium catalyst |
| 07/13/1993 | US5227519 Production of carboxylic acids from carbonylation of alcohol |
| 07/13/1993 | US5227517 Process for preparing ethylidene diacetate using iodide catalysts |
| 07/13/1993 | US5227029 Separation of formic acid from acetic acid by extractive distillation |
| 07/13/1993 | CA1320148C Method for recovering crystals from crystal-containing slurry |
| 07/08/1993 | WO1993013215A1 Synthesis of homochiral 2-hydroxy acids |
| 07/08/1993 | WO1993013046A1 Stereo-selective synthesis of 2-aryl-propionic acids of high optical purity by using chiral oxazolines |
| 07/08/1993 | WO1993013042A1 Process for producing methacrylic acid and methacrolein |
| 07/07/1993 | EP0549593A1 Method for racemization of non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids and their esters with c 1?-c 6? alcohols. |
| 07/06/1993 | US5225594 Process for producing methacrylic acid |
| 07/06/1993 | US5225593 Process for preparing pyruvate |
| 07/06/1993 | US5225575 Oxidation process and apparatus |
| 07/06/1993 | US5225574 Preparation of phthalic anhydride from o-xylene |
| 07/06/1993 | US5225573 Intermediates to tetrabromophthalic anhydride and process therefor |
| 07/06/1993 | US5225572 Ethylating polyethylbenzene fraction using Friedel-Crafts catalyst; separating tetraethylbenzenes; oxidation; transalkylation |
| 07/06/1993 | CA1319935C Condensed acetoacetic-acid-ester titanium-chelates and process for the production thereof |
| 06/30/1993 | EP0549531A1 Process for preparing acid anhydrides |
| 06/30/1993 | EP0548906A2 Method for preparing nuclear-substituted salicylic acids and metal salts thereof |
| 06/30/1993 | EP0548737A2 Process for preparing oxadimethyl acrylic acid |
| 06/30/1993 | EP0548671A2 Process for preparing optically active alpha-hydroxy-carboxylic acids |
| 06/30/1993 | EP0548426A1 Method for increasing the efficiency of liquid phase oxidation reactions |
| 06/30/1993 | CN1021438C Improved process for extracting citric acid |
| 06/30/1993 | CN1021437C Improved process for extracting citric acid |
| 06/30/1993 | CN1021436C Process for preparing of absolute stereochemical formula crystallographic compound |
| 06/30/1993 | CN1021435C Impurity removal from carbon monoxide and/or hydrogen-containing streams |
| 06/29/1993 | US5223642 Process for the preparation of ether carboxylic acids from carbohydrates and derivatives thereof and their use |
| 06/29/1993 | US5223641 Catalytic carbonylation of (poly) olefins; acid catalysts, metal oxide; esterifying to nonhydrolyzable ester |
| 06/29/1993 | US5223640 Preparation of optically active α-aryl propionic acids |
| 06/29/1993 | CA1319703C Method for making isobutyric acid |
| 06/24/1993 | WO1993012065A1 Process for preparing purified 2,6-naphthalenedicarboxylic acid |
| 06/24/1993 | WO1993012064A1 A method of preparing carboxylic acids or esters thereof by the oxidative cleavage of unsaturated fatty acids or esters thereof |
| 06/24/1993 | WO1993012063A1 Process for the manufacture of adipic acid |
| 06/24/1993 | WO1993012062A1 Process for preparing ketone enantiomer |
| 06/24/1993 | WO1993012059A1 METHOD OF OBTAINING α-SUBSTITUTED φ-HYDROPERFLUOROALKANES |
| 06/24/1993 | CA2125474A1 A method of preparing carboxylic acids or esters thereof by the oxidative cleavage of unsaturated fatty acids or esters thereof |
| 06/24/1993 | CA2117323A1 Process for the manufacture of adipic acid |
| 06/23/1993 | CN1073436A Process for the preparation of oxydiphthalic acid and purified oxydiphthalic anhydrides from crude oxydiphthalic anhydride |
| 06/23/1993 | CN1021321C Process for preparation of tetrakis (3-(3,5-di-tertbutyl-4-hydroxyphenyl) propionyl-oxymethyl) methane with amorphous structure |
| 06/22/1993 | US5221800 One step air oxidation of cyclohexane to produce adipic acid |
| 06/22/1993 | US5221772 Heating o-chlorophenyl/acetic acid with alkali metal hydroxide in organic solvent in presence of copper salt |
| 06/22/1993 | US5221766 Oxidizing 2-/p-isobutylphenyl/propionaldehyde at low reaction temperature in presence of inorganic acid using hypohalogenite |
| 06/22/1993 | US5221765 Racemization process for an optically active carboxylic acid or ester thereof |
| 06/22/1993 | US5221762 Reacting a phenol with benzolactone compound; then phosgene or thionyl chloride; esterification with alcohol |
| 06/22/1993 | US5221544 Production of dietary fatty acid salt products |
| 06/22/1993 | CA1319363C 3-demethyl-4-fluoromevalonic acid derivatives, a process for the preparation thereof, pharmaceutical products based on these compounds, the use thereof, and intermediates |
| 06/21/1993 | CA2085823A1 Process for the preparation of acid anhydrides |
| 06/21/1993 | CA2085634A1 Process for the preparation of optically active .alpha.-hydroxycarboxylic acids |
| 06/20/1993 | CA2104283A1 Process for preparing purified 2,6-naphthalenedicarboxylic acid |
| 06/17/1993 | DE4141474A1 Cetyl tri:methyl ammonium propionate prepn. |
| 06/16/1993 | EP0546677A1 Process for the fluidized bed oxidation of ethane to acetic acid |
| 06/16/1993 | EP0546374A2 Process for preparing ortho, ortho-disubstituted benzoic acids |
| 06/16/1993 | EP0545997A1 Carbonylation of methanol using a novel transition metal catalyst precursor. |
| 06/16/1993 | CN1073159A Process for the fluidized bed oxidation of ethane to acetic acid |
| 06/16/1993 | CN1021221C Process for production of aromatic carboxylic acids |
| 06/15/1993 | USRE34281 Removal of iodine or ioidide impurities |
| 06/15/1993 | US5220060 Method for making anhydride from ester using a palladium-containing catalyst system |
| 06/15/1993 | US5220058 Iodide removal process |
| 06/15/1993 | US5220053 Mixing racemic acid with solvent, reacting with chiral base, precipitating salt, treating with racemic mixture to increase concentration, separating |
| 06/15/1993 | US5220045 Reacting acid with transition metal nitrate and amine. ammonia or tetraalkylhydroxide; polymerizing conjugated dienes |
| 06/15/1993 | CA1319149C Pharmacologically active 2-and 3-substituted (1',5'-diaryl-3-pyrazolyl)-n-hydroxypropanamides and method for synthesizing the same |
| 06/15/1993 | CA1319148C Thyronine analogous compounds |
| 06/10/1993 | WO1993011105A1 Leukotriene-b4 derivatives, process for preparing the same and medicaments |
| 06/10/1993 | WO1993010875A1 Recovery of substantially pure anhydrous hydrogen fluoride (hf) from mixtures comprising acyl fluorides or water |
| 06/10/1993 | WO1993010672A1 Production of dietary fatty acid salt products |
| 06/10/1993 | WO1993010670A1 Production of dietary fatty acid salt compositions |
| 06/10/1993 | WO1993010668A1 Production of dietary fatty acid salt products |
| 06/10/1993 | WO1993009077A3 Process for the preparation of fluorinated benzoic acids |
| 06/10/1993 | CA2122992A1 Leukotriene-b derivatives, process for preparing the same and medicaments |
| 06/10/1993 | CA2083459A1 Process for the fluidized bed oxidation of ethane to acetic acid |
| 06/09/1993 | EP0545774A1 Silica supports modified by grafting polyalkylguanidinium groups, process for their preparation and their use as catalysts |
| 06/09/1993 | EP0545653A1 Ashless dispersants formed form substituted acylating agents and their production and use |
| 06/09/1993 | EP0545553A1 Enzymatic preparation of N-(phosphonomethyl)glycine |
| 06/09/1993 | EP0545101A1 Process for the purification of waste acetic acid |
| 06/09/1993 | EP0544740A1 Process for transforming (benzoyl-3 phenyl)-2 propionic acid into an s(+) isomer. |
| 06/09/1993 | EP0406310B1 Process for the carbonylation of iodoaromatic compounds |
| 06/09/1993 | CN1072930A A preparation process for lactone and its intermediate |
| 06/09/1993 | CN1072925A Production of p-phthaloyl chloride, m-phthaloyl chloride and acetophenone by united body method |
| 06/09/1993 | CN1072924A Removal of halide impurities from organic liquids |
| 06/08/1993 | US5218146 Process for production of acrylic acid |
| 06/08/1993 | US5218145 Catalytically reacting propylene, carbon monoxide, water or alcohol in liquid hydrogen fluoride as catalyst while cooling reaction mixture by circulation and heat exchanging of addition product intermediate |
| 06/08/1993 | US5218144 Hydrocarboxylation of pentanoic compounds; iridium catalyst, |
| 06/08/1993 | US5218143 Process for preparing carboxylic acids |
| 06/08/1993 | US5218142 Recovering racemic (trans) 3-methylene-1,2-cyclopropanedicarboxylic acid from the reaction of (trans)-3-methylene-1,2-cyclopropanedicarboxylic acid with (r)-(+)-alpha -methylbenzylamine |
| 06/08/1993 | US5218140 Carbonylation reaction and catalyst therefor |
| 06/02/1993 | EP0544496A1 Removal of halide impurities from organic liquids |
| 06/02/1993 | EP0543937A1 Process for the purification of acetic anhydride and acetic acid. |
| 06/02/1993 | CN1021011C 2,2-difluocyclopropylethane derivatives processes for their preparation and their use as pesticides |
| 06/01/1993 | US5215952 Mixing catalytically active mixed oxide with fibers, shaping, calcining to remove fibers and form channels |
| 06/01/1993 | US5215671 Purification method of 2-chloropropionic acid |
| 06/01/1993 | US5215630 Using a system of at least three connected distillation columns to separate a mixture of higher and lower number carbon fatty acids, and collect the pure concentrates |