| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 04/03/1991 | EP0419759A2 Aluminium, magnesium-hydroxy-fatty acid compounds and thermostable lipogels prepared therewith |
| 04/03/1991 | EP0419610A1 New leukotriene b4 derivatives, process for producing them and their use as drugs. |
| 04/03/1991 | EP0419584A1 Method for preparing (+)-isocitric acid and its derivatives. |
| 04/03/1991 | CN1050386A Indolo-benzoquinoline derivatives, process for preparing same and their pharmaceutical use for anti-allorhythmia |
| 04/03/1991 | CN1050373A Process for preparing optically active 2-aryl-alkanoic acid, in particular 2-aryl propionic |
| 04/03/1991 | CN1050340A Catalyst for catalytic gas-phase oxidation of olefins to unsaturated aldehydes |
| 04/03/1991 | CN1012268B Synthesis of acrylic acid derivatives |
| 04/03/1991 | CA2026653A1 Process for the carbonylation of acrylic acid |
| 04/02/1991 | US5004832 Preparing alpha-arylalkanoic acids |
| 04/02/1991 | US5004830 Process for oxidation of alkyl aromatic compounds |
| 04/02/1991 | US5004797 Partly fluorinated carboxylic acids and derivatives thereof, processes for their preparation and their use |
| 04/02/1991 | US5004567 Process for producing fluorine-containing aliphatic carboxylic acids |
| 04/02/1991 | US5004565 Method and compositions providing enhanced chemiluminescence from 1,2-dioxetanes |
| 04/02/1991 | US5004494 Heterocyclic compounds |
| 04/02/1991 | CA1282427C Tetrakis ¬3-(3,5-di-tert. butyl-4-hydroxyphenyl) propionyl-oxymethyl| methane with amorphous structure, process for its preparation and its useas a stabilizer |
| 04/02/1991 | CA1282410C Process for the preparation of optically active ó-arylalkanoic acids and novel intermediates thereof |
| 03/29/1991 | CA2025878A1 Process for the preparation of mixtures of oil-suluble iron and magnesium salts of saturated aliphatic monocarboxylic acids and their use |
| 03/27/1991 | EP0419312A1 Method for the production of optically active 2-aryl-propionic acids |
| 03/27/1991 | EP0418657A2 Process for producing methacrylic acid and methacrolein by catalytic oxidation of isobutane |
| 03/27/1991 | CN1050182A Quinone derivatives and pharmacological use |
| 03/26/1991 | US5003105 Reaction of chlorine with terephthaloyl chloride in the presence of ferric chloride, crystallization |
| 03/26/1991 | US5003104 Rhodium compound, an iodide and a lithium component |
| 03/26/1991 | US5003103 Decarboxylation, chlorodenitration, catalysis |
| 03/26/1991 | US5003088 Reacting chlorine with a saturated or partially saturated halophthalic anhydride |
| 03/26/1991 | US5003085 Catalytic oxidation of methylated diphenyl substituted maleic anhydride |
| 03/26/1991 | US5002914 Process for purifying and recovering the contaminated catalyst solution arising in the carbonylation of methanol and/or methyl acetate and/or dimethyl ether |
| 03/21/1991 | WO1991003455A1 Process for making succinyl acetone |
| 03/21/1991 | WO1991003453A1 Optically active 2-(alkyl-substituted phenyl)-propionic acid derivative and optical resolution of (±)-1-methyl-3-phenylpropylamine |
| 03/21/1991 | WO1991003452A1 Asymmetric synthesis of acids by the palladium catalysed hydrocarboxylation of olefins |
| 03/21/1991 | WO1991003443A1 A process for the production of 4,4'-dialkylated biphenyl compounds |
| 03/20/1991 | EP0418013A2 Direct magnesiation of organic materials |
| 03/20/1991 | EP0417722A1 Catalyst for catalytically oxidising olefins in the gas phase in unsaturated aldehydes |
| 03/20/1991 | EP0417691A2 Process for the preparation of halophthalic anhydrides |
| 03/20/1991 | EP0417690A2 Aromatization process |
| 03/20/1991 | EP0417432A1 Process for preparing 3-hydroxy 2-keto acids |
| 03/20/1991 | CN1050015A Technology of recovery of acetic acid from industrial organic waste water containing acetic acid |
| 03/19/1991 | US5001288 Haloethylation of aromatic hydrocarbons |
| 03/19/1991 | US5001260 Tetracarboxylic acids |
| 03/19/1991 | US5001259 Methanol carbonylation process |
| 03/19/1991 | US5001257 Preparation of 4-pentenoic acid, amide or esters by isomerization |
| 03/19/1991 | US5001245 Process for producing metallic salt of ethercarboxylic acid |
| 03/19/1991 | US5001100 Catalyst used in a process for producing pyromellitic dianhydride |
| 03/15/1991 | WO1991014670A1 Process for producing branched fatty acids and their esters |
| 03/13/1991 | EP0416087A1 Defluoridation of carboxylic acids using zeolites |
| 03/13/1991 | EP0416085A1 Process for the preparation of phenylpyruvic acid from benzyl chloride |
| 03/12/1991 | US4999452 Minimization of refining steps, removal of formaldehyde |
| 03/12/1991 | US4999450 Process for preparing alpha-(3-benzylphenyl) propionic acid derivative |
| 03/12/1991 | CA2023724A1 Process for the preparation of halophthalic anhydrides |
| 03/12/1991 | CA2023720A1 Aromatization process |
| 03/07/1991 | WO1991002729A1 Process for the production of trimellitic anhydride with improved color |
| 03/07/1991 | WO1991002713A1 Method of producing 3,4,3',4'-substituted biphenyl compounds |
| 03/07/1991 | DE3929063A1 Verfahren zur herstellung von alkalisalzen von ethercarbonsaeuren A process for preparing alkali metal salts of ether carboxylic acids |
| 03/07/1991 | CA2024791A1 Anti-caking coating and method for preparation thereof |
| 03/06/1991 | EP0415776A2 Indolobenzoquinoline derivatives, their preparation and their use as anti-arrhythmic drugs |
| 03/06/1991 | EP0415697A2 Process for treating fatty acids |
| 03/06/1991 | EP0415347A2 Catalyst for the production of methacrylic acid |
| 03/06/1991 | EP0415214A2 Method for the production of derivatives of alpha-fluoroacrylic acid |
| 03/06/1991 | CA2024546A1 Process for the preparation of optically active aryl-2 propionic acids |
| 03/05/1991 | US4997979 Process for the preparation of alkaline phenylpyrovate |
| 03/05/1991 | US4997978 Preparation of alkyl carboxylates by hydrocarbonylation |
| 03/05/1991 | US4997489 Extraction of products from almond fruit |
| 03/05/1991 | CA1281033C Cyclohexenone derivatives, their manufacture and their use for controlling undesirable plant growth |
| 03/05/1991 | CA1281029C Optically active ketals, processes for their preparation and their use in the synthesis of ó-arylakanoic acids |
| 03/02/1991 | WO1991003454A1 Process for the production of alkali metal salts of ethercarboxylic acids |
| 03/02/1991 | CA2066452A1 Process for the production of alkali metal salts of ethercarboxylic acids |
| 03/01/1991 | CA2025345A1 Process for treating fatty acids |
| 03/01/1991 | CA2024252A1 Indolobenzoquinoline derivatives, their preparation and their use as anti-arrythmic drugs |
| 02/27/1991 | WO1991002712A1 Method for preparing ether carboxylic acids from carbohydrates and their derivatives and use thereof |
| 02/27/1991 | EP0414207A2 Method for preparing alpha-(-4-isobutylphenyl) propionic acid or its precursor |
| 02/27/1991 | EP0414062A2 Process for preparing aromatic dicarboxylic acids and novel aromatic dicarboxylic acids |
| 02/27/1991 | CN1049495A Butyric acid derivatives |
| 02/27/1991 | CA2065312A1 Method for preparing ether carboxylic acids from carbohydrates and their derivatives and use thereof |
| 02/26/1991 | US4996385 Produced from titanium chelates with coordination number at least five; catalyst for alkylation, isomerization, dehydration |
| 02/26/1991 | US4996371 Method for fluorodecarboxylation |
| 02/26/1991 | US4996357 Process for preparing acetic acid |
| 02/26/1991 | US4996354 Reacting resorcinol with an alkali metal carbonate or bicarbonate in a carbon dioxide atmosphere |
| 02/26/1991 | US4996353 Process for the preparation of para,para'-polyphenyldicarboxylic acid |
| 02/26/1991 | US4996349 Enantioselective process |
| 02/26/1991 | US4996320 Thyroid inhibitors |
| 02/26/1991 | US4996179 Mixed oxides of vanadium and phosphorus in oxidation catalyst |
| 02/26/1991 | US4996007 Process for the oxidation of alcohols to aldehydes/acids/esters |
| 02/26/1991 | CA1280761C Calixarene derivatives and use of such compounds as accelerators in adhesive compositions |
| 02/21/1991 | WO1991001962A1 Continuous process for preparation of aqueous dispersions of metal soaps |
| 02/21/1991 | WO1991001960A1 Process |
| 02/20/1991 | EP0413666A1 Butyric acid derivatives |
| 02/20/1991 | EP0413264A1 Process for the preparation of chlorocarboxylic acid chlorides |
| 02/19/1991 | US4994609 Evaporation, extraction, washing |
| 02/19/1991 | US4994608 By-product inhibition |
| 02/19/1991 | US4994607 Using a rhodium or ruthenium coordination complex of a chiral phosphine compound |
| 02/19/1991 | US4994606 Process for the preparation of 4,5-difluoroanthranilic acid from 4,5-difluorophthalic anhydride or 4,5-difluorophthalic acid |
| 02/19/1991 | US4994604 Salt formation in aqueous-organic solvent mixture followed by preferential crystallization |
| 02/19/1991 | US4994597 Cyanation of 3-chloro-1,2-propanediol |
| 02/19/1991 | US4994590 Excellent catalyst for asymmetric hydrogenation |
| 02/19/1991 | US4994151 Oxygenated organic compounds as additional extractive agents |
| 02/19/1991 | CA2023464A1 Butyric acid derivatives |
| 02/19/1991 | CA1280441C Meta-substituted dioxa-alkane carboxylic acids, esters, amides and salts of diphenyl ethers |
| 02/19/1991 | CA1280438C Process for the co-production of aromatic carboxylates and alkyl iodides |
| 02/19/1991 | CA1280437C Process for the co-production of aromatic carboxylates and alkyl iodides |
| 02/19/1991 | CA1280400C Process for purifying and recovering catalyst solution contaminated during the carbonylation of methyl acetate and/or dimethylether |
| 02/16/1991 | CA2020409A1 Process for preparing 3-hydroxy 2-keto acids |