| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 04/04/1990 | EP0361798A2 Oxidation of polyalkylaromatics |
| 04/04/1990 | EP0361785A2 Removal of iodine or iodide impurities |
| 04/04/1990 | EP0361372A1 Anhydrous diluents for the isobutylene oxidation reaction to methacrolein and methacrolein oxidation to methacrylic acid |
| 04/04/1990 | EP0361273A2 7-Substituted derivatives of 3,5-dihydroxyhept-6-inoic acid, process for their preparation, their use as medicaments, and intermediates |
| 04/04/1990 | EP0361021A1 Process for production of alpha-(4-isobutylphenyl)propionic acid |
| 04/04/1990 | CN1040980A Method and compositions providing enhanced chemiluminescence from 1,2-dioxetanes |
| 04/03/1990 | US4914243 Demethylation of 2,6-dimethoxy-1-naphthalenecarboxaldehyde with nucleophilic sulfide |
| 04/03/1990 | US4914230 Separting liquid stream into carboxylic acid, water, and solid catalyst streams; recovery and absorption of catalyst |
| 04/03/1990 | US4914226 Malonic acid derivatives and methods for their synthesis |
| 04/03/1990 | US4914127 3-Demethylmevalonic acid derivatives, a process for their preparation pharmaceutical products based on these compounds, their use and intermediates |
| 04/03/1990 | CA1267420A1 Bicyclic naphthalenic derivatives, process for their preparation and use in human and veterinary medicine |
| 04/03/1990 | CA1267363A1 Cosmetics |
| 03/28/1990 | EP0360351A1 Process for the preparation of cyclopentene, cyclopentane and cyclohexane derivatives |
| 03/28/1990 | EP0360095A1 Process for the preparation of 2,4-dihydroxybenzoic acid |
| 03/28/1990 | EP0217092B1 3-dimethyl-mevalonic-acid derivatives, process for their preparation, pharmaceutical compositions based on these compounds, their use and intermediates |
| 03/27/1990 | US4912255 Ionizing with sodium carbonate |
| 03/27/1990 | US4912254 Preparation of α-arylalkanoic acids |
| 03/27/1990 | CA1267155A1 Process for preparing 5-(2,5-dimethylphenoxy)-2,2- dimethylpentanoic acid |
| 03/27/1990 | CA1267154A1 4,4-(bis(4-hydroxyphenyl)cyclohexanecarboxylic acid derivatives and process for preparing same |
| 03/27/1990 | CA1267141A1 Eicosatrynoic acid esters and amides and their use in pharmaceutics and cosmetics |
| 03/27/1990 | CA1267129A1 Carrier-supported catalyst and process for making monocarboxylic anhydrides |
| 03/22/1990 | WO1990002731A1 Process for the preparation of 4-sulfo-2-chlorobenzoic acid |
| 03/22/1990 | WO1990002725A1 Process for producing 2-oxo-3-aromatic carboxylic acid derivatives |
| 03/22/1990 | WO1990002603A1 Device for carrying out catalytic reactions |
| 03/21/1990 | EP0359621A1 Compound labelled with tritium, its preparation and use, especially in the determination of the affinity of retinoids for their nuclear receptors and their cytosolic binding protein |
| 03/21/1990 | EP0359316A1 Process for the production of alkenyl-succinic anhydrides |
| 03/21/1990 | EP0359098A1 Method of manufacturing alkali metal salt of 2,3,6,7-naphthalenetetracarboxylic acid |
| 03/21/1990 | EP0359043A1 Process for the isolation of 2-keto-polyhydroxy-C6-carboxylic acids, especially of 2-keto-gulonic acid, from fermentation draw-offs |
| 03/21/1990 | EP0359042A2 Process for the isolation of 2-keto-polyhydroxy-C6-carboxylic acids, especially 2-keto-L-gulonic acid, from aqueous fermentation media |
| 03/21/1990 | EP0358886A1 Preparation of dialkoxybenzoic acid |
| 03/21/1990 | CN1040578A Enantio-selective process for preparing derivatives of hemicaronic aldehyde of trans or cis-structure & intermediates obtained |
| 03/20/1990 | US4910337 Metallating a alkylaromatic compound; adding potassium alkoxide in trialkylamine |
| 03/20/1990 | US4910309 Enrichment of optical of 2-(4-aryloxyphenoxy)-propionic acids by crystallization as hydrates |
| 03/20/1990 | US4910305 Containing a protected 4-hydroxyphenyl |
| 03/20/1990 | US4910224 Method of modifying the lipid structure and function of cell membranes and pharmaceutical compositions for use therein |
| 03/20/1990 | US4910175 Catalyst recovery |
| 03/20/1990 | US4909907 Formic acid as overhead product |
| 03/20/1990 | CA1266950A1 Method and apparatus for multipolymer synthesis systems |
| 03/20/1990 | CA1266828A1 Pharmaceutical compositions of the prodrug type, a process for the preparation thereof, a process for the preparation of prodrug functioning compounds and compounds obtained herein |
| 03/15/1990 | DE3926642A1 Electrodialysis appts. for recovering acid esp. organic acid from salt - with stack of 4 compartment cells separated by ion exchange membranes, sharing outer compartments and electrodes |
| 03/14/1990 | EP0357914A1 Process for preparing dialkoxybenzoic acid |
| 03/14/1990 | EP0357865A2 Process for producing omega-hydroxy fatty acids |
| 03/14/1990 | EP0195013B1 Preparation and use of co-formed catalyst |
| 03/14/1990 | CN1007150B Synthesis of 2,4-dichlor-5-fluor benzoic acid |
| 03/14/1990 | CN1007149B Dehydration for maleic acid |
| 03/14/1990 | CN1007132B Iron/lithium-proved catalyst for prodn. of maleic anhydride and process for prepn. thereof |
| 03/13/1990 | US4908477 Passing nonaromatic hydrocarbon in countercurrent flow through carbonylation mixture to extract methyl iodide |
| 03/13/1990 | US4908476 Reacting hydroxyaromatic ketone with substituted acid to form 2-(acylphenoxy)alkanoic acid, oxidizing, hydrolyzing with alcohol |
| 03/13/1990 | US4908473 Process for selectively hydroesterifying diolefin |
| 03/13/1990 | US4908471 Catalytic oxidation of xylene or toluylic acid ester while withdrawing and recycling a portion of the reaction phase |
| 03/13/1990 | US4908385 Pharmaceuticals |
| 03/13/1990 | US4908162 Method of making triple bonded unsaturated fatty acids |
| 03/13/1990 | CA1266646A1 Benzonaphtalenic derivatives, process for their preparation and uses as pharmaceutic and cosmetic agents |
| 03/07/1990 | EP0357428A1 Process for preparing Beta-hydroxy fatty acid |
| 03/07/1990 | EP0357243A2 The production of formate salts of nitrogenous bases |
| 03/07/1990 | EP0356901A1 Process for preparing mixtures of ether-carboxylic acids and salts |
| 03/06/1990 | US4907278 Integrated processing unit, particularly for connected speech recognition systems |
| 03/06/1990 | US4906793 Silica-titania hydrocarbon conversion catalyst |
| 03/06/1990 | US4906772 Process for production of polycarboxylic aromatic acids |
| 03/06/1990 | US4906760 Purification of anhydrides |
| 03/06/1990 | US4906615 Substituted dipeptides as inhibitors of enkephalinases |
| 03/06/1990 | US4906416 Preparation of perfluoroalkanecarboxylic acids and novel perfluoroalkanedichloroethylenes obtained |
| 03/06/1990 | US4906415 Carrier-supported catalyst and process for making monocarboxylic anhydrides |
| 03/06/1990 | US4906343 Process for the photochemical production of α-aryl propionic acid |
| 02/28/1990 | EP0356315A1 Process for preparing methyl methacrylate from isobutyric acid |
| 02/28/1990 | EP0356236A2 Chloroethylation of aromatic hydrocarbons |
| 02/28/1990 | EP0356235A2 Bromoethylation of aromatic hydrocarbons |
| 02/28/1990 | EP0355978A2 Process for preparing CHF2OCHFCF3 and CHF2OCHCLCF3 and novel intermediate compounds employed thereby |
| 02/28/1990 | EP0355809A1 Process for preparing ether-carboxylic acids and salts |
| 02/28/1990 | EP0355807A2 Process for the manufacture of ether carboxylic acids |
| 02/28/1990 | EP0355806A2 Process for the manufacture of mixtures of ether carboxylic acids |
| 02/28/1990 | CN1040050A Process for preparing high-concentration mixtures of polyunsaturated fatty acids and of their esters from oils of animal and/or vegetable origin, so obtained mixtures, and their use for prophylatic |
| 02/28/1990 | CN1040023A Rapidly solubilized calcium fumarate |
| 02/27/1990 | US4904824 Chemical process |
| 02/27/1990 | US4904823 Hydroquinone derivatives and a process for their preparation |
| 02/27/1990 | US4904822 Process for the optical resolution of (+)-2-hydroxy-4-phenylbutanoic acid |
| 02/27/1990 | US4904817 Carbonylation of corresponding iodides |
| 02/27/1990 | US4904664 Benzene compounds having two pyridazinone substituents |
| 02/27/1990 | US4904389 Process for the separation of dicarboxylic acids |
| 02/22/1990 | WO1990001475A1 Thiol-reactive cross-linking reagents |
| 02/21/1990 | EP0355075A2 Method of preparing aliphatic carboxylic acid |
| 02/21/1990 | CN1039798A Process for preparing methoxyacetic acid |
| 02/21/1990 | CN1006888B Process for preparing 2, 4-dichloro-5-fluoro-benzoic acid |
| 02/21/1990 | CN1006887B New technology of producing caproic acid by 2-octanol and/or 2-octanone |
| 02/20/1990 | US4902840 Substituted tetrahydroindane derivatives and organoleptic uses of substituted tetrahydroindanes |
| 02/20/1990 | US4902829 Silica molecular sieve adsorber |
| 02/20/1990 | US4902828 Recovery of aqueous glyoxylic acid solutions |
| 02/20/1990 | US4902827 Process for the preparation of adipic acid |
| 02/20/1990 | US4902822 Process for the preparation of carboxylic acids or esters thereof |
| 02/20/1990 | US4902659 Preparation of improved nickel-containing catalyst and process for conversion of alcohols to carboxylic acids therewith |
| 02/20/1990 | CA1266057A1 PROCESS FOR THE OPTICAL RESOLUTION OF RACEMIC MIXTURES OF .alpha.-NAPHTHYLPROPIONIC ACIDS |
| 02/15/1990 | DE3926634A1 Multi-cell electrodialysis appts. - esp. for organic acid recovery from salt |
| 02/14/1990 | EP0354529A2 Chiral hydroxycarboxylic acids from prochiral diols |
| 02/14/1990 | EP0354444A2 Process for the introduction of fluorine on aromatic nucleus by nucleophilic exchange |
| 02/14/1990 | EP0354420A1 Method of production of fluorinated carboxylic acid fluorides |
| 02/14/1990 | EP0354419A1 Method for the production of fluorinated carboxylic acid fluorides |
| 02/14/1990 | CN1039580A Method for recovering crystals from crystal-containing slurry |
| 02/14/1990 | CN1006782B Oxidation method |
| 02/13/1990 | US4900871 Hydrocarbon oxidations catalyzed by iron coordination complexes containing a halogenated ligand |
| 02/13/1990 | US4900865 Method for producing a di-(mono- or poly-)carboxyaryl ether |