Class 562/407 - Formation of carboxyl group by oxidation

Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein a carboxyl group of an aromatic acid is
No. of patents: 40
Last issue date: 02/10/2009

Number	Title	Issue Date
7488843	Oxidation process for aromatic compound Methylene substituted aromatic compounds can be oxidized using t-butyl hydroperoxide and microwave radiation. In particular, xylenes give primarily phthalic acids, while toluene gives benzoic acid. Other methylene substituted aromatic compounds where the methylene g...	02/10/2009
7381849	Synthesis of asymmetric tetracarboxylic acids and dianhydrides This invention relates to the compositions and processes for preparing 2,3,3′,4′-tetramethylbenzophenone and asymmetrical dianhydrides such as 2,3,3′,4′ benzophenone dianhydride (a-BTDA), and 3,4′-(hexafluoroisopropylidene)diphthalic anhydride (a-6FDA). a-...	06/03/2008
7348291	Catalyst for the manufacture of acrylonitrile A catalyst comprising a complex of catalytic oxides comprising potassium, cesium, cerium, chromium, cobalt, nickel, iron, bismuth, molybdenum, wherein the relative ratios of these elements is represented by the following general formula AaK...	03/25/2008
7294740	Process for the synthesis of N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids The invention claimed herein provides a process to oxidize N-(5-alkoxy-2-methyl-4-nitrophenyl)acetamides to N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids using potassium permanganate in the presence of magnesium sulfate in aqueous sulfolane or aqueous pyridine. ...	11/13/2007
7213540	Steam recompression in carboxylic acid processes Disclosed is a method for the re-compression of process generated steam to create a higher pressure steam that is useful as a heating medium in other parts of a carboxylic acid production process or, in general utilized in another process. The invention comprises th...	05/08/2007
7196033	Advances in amination catalysis Provided herein are catalysts useful in reductive amination, which include nickel, copper, zirconium and/or chromium, oxygen, and tin. The presence of the tin increases the selectivity of the catalyst in reductive aminations over the catalysts of the prior art. ...	03/27/2007
7173149	Process for preparing alkynecarboxylic acids by oxidation of alkyne alcohols A process for preparing alkynecarboxylic acids includes the oxidation of an alkyne alcohol with a hypohalite in the presence of a nitroxyl compound at a pH of greater than 7 with continual addition of the alkyne alcohol and of the hypohalite to the reaction mixture....	02/06/2007
7119225	Gold catalyst for selective oxidation A supported gold catalyst is used for selective oxidation. In particular, an alcohol or ketone is oxidized to produce the corresponding carboxylic acid, an alcohol is oxidized to produce the corresponding ketone, and xylene is oxidized to produce the corresponding m...	10/10/2006
7071140	Catalyst for the manufacture of acrylonitrile A catalyst comprising a complex of catalytic oxides comprising rubidium, cerium, chromium, iron, bismuth, molybdenum, and at least one of nickel or nickel and cobalt, optionally magnesium, and optionally one of phosphorus, antimony, tellurium, sodium, lithium, potas...	07/04/2006
7034170	Manganese(IV) complex salts and their use as oxidation catalysts Manganese(IV) complex salts of formula [LMn(μ-O)3MnL]n[XM12O40]m, (I), wherein L is 1,4,7-trimethyl-1,4,7-triazacyclononane, X is P or Si, M is Mo or W, n is 2 or 3, and m is 1 or 2, with the provisos that (i) ...	04/25/2006
6831195	Method for production of organic acid A method for producing an organic acid and/or an organic acid ester which utilizes a steam system permitting stable production of an organic acid and/or an organic acid ester and realizing a high thermal efficiency constantly relative to the waste heat generated in ...	12/14/2004
6765113	Production of aromatic carboxylic acids A process for the production of an aromatic carboxylic acid comprising contacting in the presence of a catalyst, within a continuous flow reactor, one or more precursors of the aromatic carboxylic acid with an oxidant, such contact being effected with said precursor...	07/20/2004
6696604	Addition of mineral acids or salts thereof to a TMA production process This invention is related to the production of trimellitic anhydride (TMA). More specifically, the invention is related to the addition of a mineral acid or salt thereof in the production process of trimellitic anhydride to reduce the viscosity of the bot...	02/24/2004
6548698	Oxidative carbonylation of toluene catalyzed by rhodium and iridium This invention relates generally to the oxidative carbonylation of toluene, catalyzed by rhodium or iridium complexes in the presence of an oxidant and under mild conditions, whereby toluic acid is produced with para-selectivity up to 98%....	04/15/2003
6254779	Treatment of effluent streams containing organic acids An acidic organics-containing waste water stream (12) derived from for example plant for the production of an aromatic carboxylic acid such as terephthalic acid is treated to allow recovery of alkali and water for recycle to the production process. The tr...	07/03/2001
6245936	Process for the selective preparation of a 2-hydroxybenzoic acid and a 4-hydroxybenzaldehyde and derivatives thereof The present invention concerns a process for the preparation of a 2-hydroxybenzoic acid and of a 4-hydroxybenzaldehyde and derivatives thereof from a mixture of two phenolic compounds, one carrying a formyl or hydroxymethyl group in the 2 position, and th...	06/12/2001
6239252	Single step process for the preparation of poly (oxyalkylene)-alpha, omega-dicarboxylic acid The invention relates to single step process for the preparation of poly (oxyalkylene)-alpha, omega-dicarboxylic acids of the formula HO2 CCH2 O(CH2 CHRO)n CH2 CO2 H, wherein R is hydrogen,...	05/29/2001
6160159	Preparation of dimethyl terephthalate via the air oxidation of p-tolualdehyde The invention is directed to a process for the production of terephthalic acid and esters thereof from p-tolualdehyde or mixtures of p-tolualdehyde and p-xylene. The process of the invention can be carried out at lower temperatures and faster throughput t...	12/12/2000
6100427	Production of amides and/or acids from nitriles A process for producing an amide and/or acid from a nitrile comprises introducing a nitrile, as a first reactant, and a hydration compound, as a second reactant which is capable of reacting with the nitrile to convert it to its corresponding amide thus hy...	08/08/2000
6084126	Oxidation using multimetal molybdenum and vanadium oxides A method for gas-phase oxidation of an organic compound such as acrolein is provided, which includes oxidizing the organic compound with an oxidizing agent in the presence of a catalyst, to produce a product such as acrylic acid, wherein the catalyst incl...	07/04/2000
5808143	Catalyst based on oxides of Fe, Co, Bi and Mo Catalysts of the formula I Aa Bb Ox !p Cc Dd Fee Cof Ei Fj Oy !q I, where A is bismuth, telluri...	09/15/1998
5786507	Process for the preparation of 3-phenylpropionic acid Process for the preparation of 3-phenylpropionic acid in which 3-phenylpropanal is subjected to an oxidation, at elevated temperature, in particular at a temperature of between 40° and 80° C., using a medium containing molecular oxygen. A high degree of...	07/28/1998
5731460	Oxidative cleavage of alkenes with a catalyst system containing a source of molybdenum, a source of rutlenium and a phase transfer agent A catalyst system and process for the oxidative cleavage of alkenes with hydrogen peroxide is provided. The catalyst system comprises a source of ruthenium, a source of molybdenum and a phase transfer agent. The process comprises contacting an alkene with...	03/24/1998
5686638	Process for the preparation of mono- or dicarboxylic acids from aldehydes, from their full acetals or hemiacetals or from mixtures thereof Process for the preparation of aliphatic or aromatic mono- or dicarboxylic acids of 4 to 22 carbon atoms by oxidation of the corresponding aldehydes having the same number of carbon atoms in a carboxylic acid from the group consisting of formic acid, acet...	11/11/1997
5536875	Enhanced oxidation of organic chemicals Organic chemical oxidation reactions are carried out using pure or nearly pure oxygen and evaporative cooling. Advantageous operating results are achieved thereby, and the oxidation of organic chemicals resulting in the production of solid products or byp...	07/16/1996
5430181	Process for improving a controlled oxidation reaction Process for improving a controlled oxidation reaction between at least one reactant and oxygen, in which at least one reactant is reacted with oxygen or an oxygen containing gas, constituting a reaction mixture, in the presence of at least one additional ...	07/04/1995
5104995	4-(3,3-ethylenedioxo- cyclohexyl) acetophenone and derivatives thereof, processes for preparing them and use of these compounds The invention is concerned with the preparation of 2-[4-(3-oxo- cyclohexyl)phenyl] propionic acid and of its derivatives. This preparation consists in transforming 4-(3,3-ethylenedioxo- cyclohexyl) acetophenone or its derivatives of the general formula: ...	04/14/1992
5036013	Aqueous-soluble polymeric coal substrate for depolymerization by a lignin peroxidase A method is provided for converting coal to low molecular weight organic compounds comprising combining an aqueous solution of an aqueous-soluble polymeric coal substrate with a lignin peroxidase, oxygen and hydrogen peroxide. The invention is exemplified...	07/30/1991
4625056	Process for producing benzene carboxylic acids from aromatic material utilizing an aliphatic organic acid agent This invention relates to a method of producing benzene carboxylic acids from an aromatic material, especially coal, by the oxidation of the aromatic material in an aqueous alkaline mixture containing an aliphatic organic acid promoter agent with a source...	11/25/1986
4384134	Process for preparing organic acids A process for preparing a coal derivative comprising a mixture of monocyclic, polycyclic, multifunctional carboxylic acids which comprises contacting an aqueous slurry containing coal with aqueous nitric acid and then drying the resulting product to remov...	05/17/1983
4382146	Organic acids and process for preparing same A mixture of polycyclic, aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in an azeotropic mixture of methyl ethyl ketone and ethanol but substantially insoluble in water, and a process for preparing the mixture of...	05/03/1983
4375553	Process for producing benzene carboxylic acid salts from aromatic materials This invention relates to a method of producing an aqueous solution which comprises soluble benzene carboxylic acid salts which is substantially free of soluble humic acid salts. A first aqueous solution (22) which comprises soluble humic acid salts and s...	03/01/1983
4368333	Method for the chemical utilization of coal by liquid phase oxidation The invention relates to an improved method for the liquid phase oxidation of coal performed with oxygen optionally in the presence of water. According to the invention oxidation is performed in the presence of a cooxidation partner selected from the grou...	01/11/1983
4345098	Process for producing benzene carboxylic acid salts and their acids A process for producing an isomerized benzene carboxylic acid salt by treating a mixture of an aromatic material, water, and a water soluble reagent comprising a Group Ia or IIa metal with oxygen under conditions sufficient to convert at least a portion o...	08/17/1982
4334084	Organic acids and process for preparing same A mixture of polycyclic, aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in a mixture of polar solvents but substantially insoluble in water and a process for preparing the mixture of polycyclic, aromatic polycarb...	06/08/1982
4294977	Process for producing aromatic carboxylic acids A process for producing a carboxylic acid salt from carbonaceous material comprising treating a mixture of a carbonaceous material which is essentially free of minerals from oil shale, water, and a material containing minerals from oil shale with oxygen u...	10/13/1981
4195186	Process for preparing organic acids A process for preparing a mixture of polycyclic aromatic polycarboxylic acids that is substantially soluble in acetone but substantially insoluble in water which comprises subjecting a slurry containing coal to reaction with aqueous nitric acid in an atmo...	03/25/1980
4195185	Process of preparing organic acids A process for preparing a mixture of polycyclic aromatic polycarboxylic acids that is substantially soluble in acetone and substantially soluble in water which comprises subjecting a slurry containing coal to reaction with aqueous nitric acid in an atmosp...	03/25/1980
4137418	Conversion of carbonaceous material A mixture of polycyclic aromatic polycarboxylic acids that is substantially soluble in acetone and substantially soluble in water and a process for preparing the mixture....	01/30/1979
4057577	Process for preparing di(alkoxy-carboxy) hydrocarbylenes A process for preparing di(alkoxycarboxy) hydrocarbylenes which comprises contacting carbon monoxide with a saturated aldehyde and a non-adjacent dihydric alcohol in the presence of a catalytic amount of hydrogen fluoride....	11/08/1977

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Class 562/407 - Formation of carboxyl group by oxidation