Patents
Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
08/2001
08/30/2001US20010018533 Reacting a Wittig salt in a solvent with a butenolide
08/30/2001US20010018402 Fixed bed raney copper catalyst
08/30/2001US20010018170 Reacting silver salt with an aliphatic alkali metal salt
08/29/2001EP1127867A1 Method for producing a monochloroester having polyfluoroalkyl group
08/29/2001EP1127618A1 Shaped catalysts
08/29/2001EP1127613A1 Shaped fixed bed copper-Raney catalyst to be used in the dehydrogenation of alcohols
08/29/2001EP1127043A1 Stereoselective process for preparing (cyclo)alkyl phenylglycolic acids
08/29/2001EP1127042A1 Method for preparing acetic acid and/or methyl acetate in the presence of iridium and platinum
08/29/2001EP0906263B1 Process for improving color of basic metal organic salts by employing c7-c17 alkyl glycidyl esters and stabilizing halogen-containing polymers therewith
08/29/2001EP0873296B1 Process for manufacturing terephthalic acid
08/29/2001CN1310700A Method for producing ortho-alkylated benzoic acid derivatives
08/29/2001CN1310042A Process for producing catalyst, and the same catalyst using for catalytic oxidation reaction
08/29/2001CN1070169C Process for carbonylation of butadiene or its derivative
08/29/2001CN1070168C Carbonylation of olefins
08/29/2001CN1070167C Process for producing carboxylic acid or corresponding esters in the presence of soluble catalyst of iridium and iodide
08/28/2001US6281391 Reacting hydroxyamide compound with lithiating agent comprising 4-methylthiophenyllithium in non-reacting solvent to form methylthiophenyl-hydroxyketone compound
08/28/2001US6281386 Purification of acrylic acid obtained by catalytic oxidation of propylene
08/28/2001US6281385 Process for preparing acetic acid by gas-phase oxidation of saturated C4-hydrocarbons and their mixtures with unsaturated C4-hydrocarbons
08/28/2001US6281384 Vapor phase catalytic oxidation of propylene to acrylic acid
08/28/2001US6281383 Process for the preparation of α,α- dimethylphenylacetic acid from α,α-dimethylbenzyl cyanide under normal pressure
08/28/2001US6281382 Oxidation catalysts
08/28/2001US6281374 Fluorinated alkanoic acid purification process
08/28/2001US6281372 Process for synthesis of vinyl esters from butene oligomers
08/28/2001US6280985 Concentration, acidification, ion exchanging, bipolar fractionating electrodialysis, recovering
08/23/2001WO2001005796A3 Aluminum compounds and process of making the same
08/23/2001US20010016668 Subjecting a compound selected from propylene, propane, acrolein, or a mixture or one selecated from isobutylene, tert-butyl aclohol, methyl-tert-butyl alcohol, to catalytic oxidation, then gas phase solvent absorption of the product
08/23/2001US20010016667 Method for preparing aromatic carboxylic acids, aromatic aldehydes, and aromatic alcohols
08/23/2001US20010015226 Tank and a method for storing an easily polymerizable compound
08/23/2001DE10007695A1 Verfahren zur Herstellung von o-Chlormethylbenzoesäurechloriden A process for preparing o-chloromethylbenzoyl chlorides
08/22/2001EP1125913A1 Preparation of 3,5-bis-(trifluormethyl)-benzoylchlorid and novel benzoylhalides: 3,5-bis-(trihalomethyl)- and 3,5-dimethyl-
08/22/2001EP1125912A2 Method for absorbing acrylic acid and method for purifying acrylic acid
08/22/2001EP1125911A2 Process for producing acrolein and acrylic acid
08/22/2001EP1125907A2 Intermediates for the production of citalopram
08/22/2001EP1125633A2 Raney-Kupfer Katalysator; dessen Verwendung bei der Dehydrierung von Alkoholen
08/22/2001EP1124808A1 An improved process for the preparation of new antidiabetic agents
08/22/2001EP1124798A1 Synthesis of methylthiophenyl hydroxyketones
08/22/2001EP1124789A1 Production of amides and/or acids from nitriles
08/22/2001EP1124785A1 A process for the preparation of alpha-arylalkanoic acids
08/22/2001EP1124783A1 Method for producing carboxylic acid chlorides
08/22/2001EP1124782A1 Method for racemate splitting of 2-hydroxypropionic acids
08/22/2001EP0966405B1 Treatment of effluent streams containing organic acids
08/22/2001CN1309652A Intermediates and process for preparation of optically active octanoic acid derivs.
08/22/2001CN1309632A Salts of N-tert-butylhydroxylamine
08/22/2001CN1309628A Process for separation of acrylic acid
08/22/2001CN1309627A Methods of extracting catalyst from reaction mixture in oxidation of cyclohexane to adipic acid
08/22/2001CN1309115A High purity monochloroacetic acid and preparing process thereof
08/22/2001CN1309114A Process for synthesizing acetic acid in heterogeneous catalysis system
08/22/2001CN1069891C Preparation of pentenoic acid
08/21/2001US6277782 Chiral adsorbents and preparation thereof as well as compounds on which the adsorbents are based and preparation of these compounds
08/18/2001CA2336742A1 Fixed bed raney copper catalyst
08/18/2001CA2336740A1 Raney copper
08/17/2001CA2318701A1 Production method of citalopram, intermediate therefor and production method of the intermediate
08/16/2001WO2001059080A1 18477, a human protein kinase and uses therefor
08/16/2001WO2001058865A1 Method for the preparation of (s)-2-acetylthio-3-phenylpropionic acid
08/16/2001WO2001058852A2 (r)-2-aryl-propionamides, useful in the inhibition of il-8-induced chemiotaxis of neutrophils
08/16/2001WO2001058850A1 A process for the preparation of salts of l-carnitine and alkanoyl l-carnitine with mucic acid
08/16/2001WO2001058845A1 Process for the preparation of aromatic carboxylic acids
08/16/2001WO2001058837A2 Process for the preparation of (r)-2-bromo-3-phenyl-propionic acid
08/16/2001WO2001058589A1 PHOSPHOR, ARSENIC AND ANTIMONY COMPOUNDS BASED UPON DIARYL-ANELLATED BICYCLO`2.2.N! PARENT SUBSTANCES AND CATALYSTS CONTAINING SAME
08/16/2001WO2001009102A3 Process for preparing 1,5-diaryl-3-substituted pyrazoles
08/16/2001US20010014759 Free radical chlorination; fluorination with hydrogen fluoride and/or antimony pentafluoride; converting the benzoyl fluoride to chloride by reacting with silicon tetrachloride in lewis acid; chemical intermediates
08/16/2001US20010014757 Process for manufacturing 3-hydroxy-3-methylbutanoic acid
08/16/2001US20010014756 Aromatic diamine/aromatic dicarboxylate and production method thereof
08/16/2001EP1144382A3 Process for preparing 1,5-diaryl-3-substituted pyrazoles
08/16/2001EP1123938A2 Organometallic fluorenyl compounds, preparation, and use
08/16/2001EP1123914A1 Columnar crystals of 6-hydroxy-2-naphthoic acid and process for the production thereof
08/16/2001EP1123738A1 A process for preparing a catalyst and catalytic oxidation therewith
08/16/2001EP1123266A1 Method for drying phenoxymethylbenzoic acids
08/16/2001EP1123265A1 Carbonylation of methanol in the presence of a rhodium/iridium/iodide ion catalytic system
08/16/2001EP1123264A1 PROCESS FOR THE MANUFACTURE OF $g(a),$g(a)-BRANCHED CARBOXYLIC ACIDS
08/16/2001DE10058773A1 Verfahren zur Rückgewinnung von Terephthalsäure aus dem pulverisierten Produkt von verbrauchtem Polyethylenterephthalat und System für die Verwendung in diesem Verfahren A process for recovery of terephthalic acid from the pulverized product of polyethylene terephthalate and spent system for use in this process
08/16/2001DE10005794A1 Verbindungen des Phosphors, Arsens und des Antimons Compounds of phosphorus, arsenic and antimony,
08/16/2001CA2399788A1 Method for the preparation of (s)-2-acetylthio-3-phenylpropionic acid
08/16/2001CA2399515A1 Process for the preparation of (r)-2-bromo-3-phenyl-propionic acid
08/16/2001CA2399431A1 Phosphor, arsenic and antimony compounds based upon diaryl-anellated bicyclo [2.2.n] parent substances and catalysts containing same
08/15/2001CN1308601A Process for purifying isophthalic acid by crystallization
08/15/2001CN1308600A Method of purifying aromatic dicrrboxylic acids
08/15/2001CN1308599A Method of separating catalyst in solution from a reaction mixture produced by oxidation of cyclohexane to adipic acid
08/15/2001CN1308598A Process for the isolation of aromatic hydroxycarboxylic acids
08/15/2001CN1308219A Shell-pipe head exchanger
08/15/2001CN1308050A Preparation method of 3,5-di (trifluoromethyl) benzoyl chloride and new 3,5-di(triahlo) benzoylate A and 3,5-dimethyl benzoylate A
08/15/2001CN1308049A Method of preventing blocking in waste gas pipe
08/15/2001CN1308048A Acrylic acid producing process
08/15/2001CN1069632C Method for purifying adipic acid by crystallization
08/15/2001CN1069631C Process for making adipic acid and dibasic acid
08/15/2001CN1069630C Process for producing optically active 2-halogen propionic acids
08/15/2001CN1069629C Process for manufacture of alpha-beta-unsaturated organic carboxylic acids
08/15/2001CN1069628C Process for producing phthalic anhydride
08/15/2001CN1069627C Process and apparatus for producing aromatic polycarboxylic acid
08/15/2001CN1069623C Method for preparing carbonyl compound
08/14/2001US6274766 Process for purifying α-keto acids
08/14/2001US6274765 Mixed oxide oxidation catalyst
08/14/2001US6274764 Molydbenum, vanadium, niobium, lead mixed oxide oxidation catalyst
08/14/2001US6274763 Shell catalyst for producing acetic acid by gas phase oxidation of unsaturated C4 -hydrocarbons
08/14/2001US6274624 Antiproliferative and neurotrophic molecules
08/14/2001US6274096 Methanol plant retrofit
08/14/2001CA2150712C Chiral adsorbents and preparation thereof as well as compounds on which the adsorbents are based and preparation of these compounds
08/14/2001CA2043615C Method of producing eicosapentaenoic acid or the ester derivative thereof
08/09/2001WO2001056969A1 Method for producing sorbic acid and sorbic acid esters or derivatives thereof
08/09/2001WO2001056967A1 Low temperature purification of naphthalene dicarboxylic acids