Class 562/419 - Hypohalite as oxidant

Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the oxidizing agent is a hypohalite, such
No. of patents: 33
Last issue date: 02/06/2007

Number	Title	Issue Date
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
6608229	Oxidation of polysaccharides with nitroxyls A simplified process for oxidizing starch and other polysaccharides in an aqueous solution or suspension using hypochlorite in the presence of a catalytic amount of a nitroxyl compound is described. The oxidation is process is bromide-free and is carried ...	08/19/2003
6538132	Process for regenerating periodic acid The invention pertains to a process for the regeneration and recovery of periodate from a spent iodate solution, by reacting the iodate with at least an equimolar amount of hypohalite, and carrying out the recovery in the presence of a water-miscible orga...	03/25/2003
6518419	Process for selective oxidation of primary alcohols Primary alcohols, especially in carbohydrates, can be selectively oxidized to aldehydes and carboxylic acids in a low-halogen process by using a peracid in the presence of a catalytic amount of a di-tertiary-alkyl nitroxyl (TEMPO) and a catalytic amount o...	02/11/2003
6440327	Polymers and use thereof as scale inhibitors Compositions and methods for inhibiting scale are provided. Pursuant to the present invention, a composition for inhibiting scale is provided that includes a carbohydrate polymer having both nitrogen-containing groups and carboxyl groups. The nitrogen-con...	08/27/2002
6150554	Oxidation process using periodic acid The present invention relates to an oxidation which converts a primary or secondary alcohol of Formula II: ##STR1## to an acid or ketone of Formula I: ##STR2## with periodic acid and a catalytic amount of a chromium reagent....	11/21/2000
6127573	Oxidaton of primary alcohols to carboxylic acids with a TEMPO catalyst using NaClO₂ and NaClO The present invention relates to a TEMPO-catalyzed oxidation of primary alcohols, RCH2 OH to corresponding carboxylic acids, RCOOH in the presence of catalytic in the presence of catalytic amount of NaClO and stoichiometric amount of NaClO...	10/03/2000
5886218	Process for preparing 4, 5-dichloro-2-methylbenzoic acid The present invention relates to a process for preparing 4,5-dichloro-2-methylbenzoic acid and also its salts in high yields and in high purities by reacting 3,4-dichlorotoluene with acetyl chloride or chloroacetyl chloride in the presence of a Friedel-Cr...	03/23/1999
5608107	Preparation of alkoxyalkanoic acids A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a resin-supported stable free radical nitroxide in the presence of a chlorine-containing oxidant and a solvent at a temperature in the range of from about 0° ...	03/04/1997
5481032	Process for the preparation of halogenated benzoic acids A process for the preparation of halogenated benzoic acids of formula (1): ##STR1## in which R1, R2, R3, R4 and R5 are hydrogen, fluorine, chlorine or bromine atoms or C1 -C6 -al...	01/02/1996
5434302	Method for the preparation of optically active 2-aryl alkyl aldehydes and formation of 2-aryl-alkanoic acids therefrom The present process is directed to preparing optically active 2-aryl alkyl aldehydes by various processes through the use of an optically active amine, (-)-2'-amino-3-phenyl propane. The aldehyde formed can then be oxidized to produce the corresponding ac...	07/18/1995
5296636	Preparation of 2,4,6-trimethylbenzoic acid A process for the preparation of 2,4,6-trimethylbenzoic acid of the formula I ##STR1## in which ଱-chloro-2,4,6-trimethylacetophenone is reacted with an alkali hydroxide solution and chlorine in the presence of a phase-transfer catalyst at ...	03/22/1994
5254796	Oxidation process The invention relates to an ecologically favorable process for the hydrolytic decomposition of halogen-containing compounds of the formula CX4 or CHX3 or mixtures of these compounds, in which X as halogen is chlorine or bromine or a ...	10/19/1993
5221766	Method for producing ଱-(p-isobutylphenyl) propionic acid A method for producing ଱-(p-isobutylphenyl)-propionic acid with a high selectivity and high purity. The method is characterized in that ଱-(p-isobutylphenyl)propionaldehyde is oxidized at temperatures not higher than -12° C. in the presence of...	06/22/1993
5183926	Process for the preparation of aromatic dicarboxylic acids and aromatic hydrocarbons Aromatic dicarboxylic acids of the formula ##STR1## in which R1, R2, m, n, and X have the meaning mentioned in the description, can be prepared from the bisphenols, on which they are based, of the formula ##STR2## if t...	02/02/1993
5097061	Method for preparing ଱-(4-isobutylphenyl)propionic acid or its precursor A method for preparing ଱-(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises a step A of forming p-isobutylstyrene from p-isobutylethylbenzene and a step B of forming ଱-(4-isobutylphenyl)propionaldehyde from p-i...	03/17/1992
5072037	Process for the preparation of 2-(4-chlorophenyl)-3-methylbutyric acid A process for the preparation of 2-(4-chlorophenyl)-3-methylbutyric acid from 4-chlorobenzaldehyde by conversion of the benzaldehyde to 3-(4-chlorophenyl)-2-methylpropenal, 3-(4-chlorophenyl)-2-methylpropanol, 1-(4-chlorophenyl)-2-methylpropene-1, and ...	12/10/1991
5068408	Hypochlorous acid as a reagent for the oxidation of organic compounds in two phase systems A process for oxidizing an organic compound selected from an aliphatic, aromatic, aliphatic/aromatic, cycloaliphatic and heterocyclic alcohol, thiol, sulfide, aldehyde, amine, amide, ketone, acid, ether, ester, and organic compounds containing an activate...	11/26/1991
4814494	Method for producing (aryl substituted) carboxylic acid or its salt An effective method for producing highly pure (aryl substituted)carboxylic acid or its salt which comprises the steps of: (I) oxidizing (aryl substituted)aldehyde in an acidic phase in the presence of hypohalogenite; and (II) bringing the oxidized product obta...	03/21/1989
4749804	Preparation of stereoisomers of ketals Pharmaceutically useful optically active ଱-arylalkanoic acids or esters, ortho esters, or amides thereof are stereoselectively prepared by contacting an aryl magnesium Grignard reagent with an optically active ଱-substituted acyl halide to form...	06/07/1988
4694100	Method for producing ଱-(p-isobutylphenyl)propionic acid or its alkyl esters A method for producing ଱-(p-isobutylphenyl)propionic acid or its alkyl esters which is characterized in that starting materials are inexpensive, processes are easy to be done and products are highly pure. The method comprises the steps of (I): catal...	09/15/1987
4684733	Process for the preparation of intermediates of derivatives of pyrrolidine and piperidine An improved process for the preparation of certain antiarrhythmic agents in which a carbon atom of a piperidine or pyrrolidine ring is bonded directly or through a methylene group to the nitrogen of a substituted benzamido group from bromo- or hydroxy-sub...	08/04/1987
4617396	Process for the preparation of derivatives of piperidine Processes for the preparation of the antiarrhythmic agent 2,5-bis(2,2,2-trifluoroethoxy)-N-(2-piperidylmethyl)benzamide....	10/14/1986
4605758	Preparation of ଱-arylalkanoic acids Pharmaceutically useful optically active ଱-arylalkanoic acids or esters, ortho esters, or amides thereof are stereoselectively prepared by contacting an aryl magnesium Grignard reagent with an optically active ଱-substituted acyl halide to form...	08/12/1986
4599445	Process for benzophenone tetracarboxylic acid A method is described for autoxidizing particular ortho-dialkyl substituted aromatic compounds using a particular type of solvent which gives rise to the formation of 3-alkanoyloxyphthalide compounds, some of which are novel. The phthalides in turn are io...	07/08/1986
4485247	3-Alkanoyloxyphthalides A method is described for autoxidizing particular ortho-dialkyl substituted aromatic compounds using a particular type of solvent which gives rise to the formation of 3-alkanoyloxyphthalide compounds, some of which are novel. The phthalides in turn are io...	11/27/1984
4474990	Preparing p-phenoxy benzoyl compounds Substantially pure p-phenoxybenzoyl compounds are prepared by reacting diphenyl ether and an appropriate acyl compound in the presence of hydrogen fluoride. The resulting p-phenoxyaryl alkyl ketone can be converted into p-phenoxybenzoic acid or salts ther...	10/02/1984
4393232	Preparation of 3-bromo-4-fluoro-benzoic acid A process for the preparation of 3-bromo-4-fluorobenzoic acid of the formula ##STR1## comprising reacting fluorobenzene of the formula ##STR2## acetyl chloride in the presence of an acylation catalyst at a temperature from about 0° to 100�...	07/12/1983
4323700	Process for preparing benzophenone derivatives A process is described for preparing benzophenone derivatives of a high purity in an extremely high yield from 3-phenylphthalide derivatives with the use of at least one oxidizing agent....	04/06/1982
4225694	Selective catalytic oxidation of unsaturated alcohols to carbonyl compounds Primary and secondary unsaturated alcohols are converted to their corresponding aldehydes and/or carboxylic acids and ketones respectively with alkali metal (per) halate, preferably sodium periodate, in the presence of ruthenium catalyst. The process is p...	09/30/1980
4111982	Coproduction of acetic and propionic acids An improved process for the simultaneous and continuous production of acetic and propionic acids in a single reactor wherein the rate of propionic acid production is enhanced over that which prevails when this acid is produced separately in the same react...	09/05/1978
4079075	Primary alkyl esters as mediums for oxidations by phase-transfer catalyzed hypohalites The process of oxidizing organic compounds by dissolving the organic compound in a water-immiscible, inert organic solvent and contacting same with an aqueous hypohalite ion in the presence of a catalytic amount of a quaternary onium salt is improved by e...	03/14/1978
3994897	Process for the manufacture of carboxylic acids from methyl ketones Carboxylic acids are manufactured by reaction of methyl ketones with hypochlorites in the presence of bromine, iodine, haloamides, and/or polymerization inhibitors. The products are starting materials for the manufacture of dyes, plant protection agents, ...	11/30/1976

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Class 562/419 - Hypohalite as oxidant