Class 568/355 - Plural -COO- groups in the reactant

Subclass of Class 568 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the compound is prepared by reacting a
No. of patents: 35
Last issue date: 07/24/2007

Number	Title	Issue Date
7247753	Method for producing macrocyclic ketones by means of dieckmann codensation in the gas phase The invention relates to a method for producing macrocyclic ketones of general formula (I) by direct cyclisation of compounds of general formula (II) in the gas phase on a heterogeneous catalyst. In general formula (I), X represents a monounsaturated or polyunsatura...	07/24/2007
6828464	Preparation of cyclopentenones The present invention provides a process for preparing 2-cyclopentenones of the general formula: where R1 to R4 are each hydrogen atoms or are alkyl or alkenyl radicals having from 1 to 12 carbon ...	12/07/2004
6762327	Selective oxidation process with enhanced safety A safe and effective process for the oxidation of a primary or secondary alcohol to the corresponding aldehyde or ketone via the reaction of said alcohol with an anhydride solution of a 1,1,1-tri(C2-C4 alkanoyloxy-1,1-dihydro-1,2-benziodoxol-3(...	07/13/2004
6500990	Method for producing jasmonate derivatives and intermediates thereof A process for efficiently producing a 2-alkyl-2-cyclopentenone comprising reacting an amine and a hydrogen halide, which are present in a ratio ranging from 1.1:1 to 5:1, with a 2-alkylidene cyclopentanone to carry out an isomerization reaction. A process...	12/31/2002
6429339	Method for producing cyclopentanone A process for preparing cyclopentanone by reacting adipic esters of the formula R1 OOC--(CH2)4 --COOR2 I where R1 and R2 are each alkyl having from 1 to 12 carbon atoms, cycloalkyl having 5 or ...	08/06/2002
6369276	Catalyst structure for ketone production and method of making and using the same A catalyst structure and method of making and using the same in a ketone production process. The catalyst structure includes a substantial theoretical monolayer of catalyst on a catalyst support to optimize ketone yield and weight hourly space velocities....	04/09/2002
5856581	Preparation of cyclic ketones Cyclic ketones, notably cyclopentanone and 2,2-dimethylcyclopentanone, are simply, economically and efficiently prepared, even on an industrial scale, by decarboxylating/cyclizing a dicarboxylic acid, in liquid phase, in the presence of a catalytically ef...	01/05/1999
5856582	Process for the manufacture of 2-hydroxy-3-methylcyclopent-2-ene-1-one A process for the manufacture of 2-hydroxy-3-methylcyclopent-2-ene-1-one, in which an ester of alpha-methyl glutaric acid and an ester of oxalic acid react in a polar aprotic solvent in the presence of an alkali metal alkoxide to form an intermediate comp...	01/05/1999
5824820	Process for the preparation of citraconic anhydride The present invention relates to a novel process for the preparation of citraconic anhydride. More precisely, the invention relates to a process for the preparation of citraconic anhydride from a starting material comprising itaconic acid. The process for...	10/20/1998
5672763	Process for the preparation of 2-substituted cyclopentanones 2-Substituted cyclopentanones are prepared by reacting adipic ester with an alkoxide in the presence of an inert solvent, thus obtaining a salt of the cyclopentanone-2-carboxylic ester, alkylating this without isolation, thus obtaining a 2-alkyl-cyclopent...	09/30/1997
5600013	Preparation of cyclic ketones Cyclic ketones, notably cyclopentanone and 2,2-dimethylcyclopentanone, are simply, economically and efficiently prepared, even on an industrial scale, by decarboxylating/cyclizing a dicarboxylic acid, in liquid phase, in the presence of a catalytically ef...	02/04/1997
5567851	Cyclohexene diol derivatives The present invention relates to optically active cyclohexene diol derivatives and optically active cyclohexenone derivatives, and a process for production of these compounds in which a special cyclohexene diol of a starting material is reacted by selecti...	10/22/1996
5426235	Preparation of cyclic ketones Cyclic ketones of the general formula I ##STR1## where n is an integer from 4 to 6, are prepared by reacting aliphatic dicarbonitriles of the general formula II NC--(CH2)n --CN (II), where n has the a...	06/20/1995
5399775	Process for preparing substituted cyclobutanes The present invention relates to a process for the preparation of substituted cyclobutanes and their use as intermediates for the preparation of anti-viral nucleoside analogs....	03/21/1995
5386039	Process for the preparation of a bicyclic decalin ketone Perhydro-5,5-8a-trimethyl-2-naphthalenone is prepared by acid cyclization of carboxylic esters of formula ##STR1## having a double bond in one of the positions indicated by the dotted lines and wherein symbol R designates a C1 -C6	01/31/1995
5360819	Molecular analytical release tags and their use in chemical analysis A release tag reagent suitable for use in the chemical analysis of a substance to be detected, which substance contains reactive groups, such as for, but not limited to gas phase detection groups, which reagent comprises three covalently bonded groups: a ...	11/01/1994
5262552	Optically active compounds and intermediates thereof, and process for manufacturing same An optically active (S)- or (R)-pentane compound of the general formula (11): ##STR1## wherein R11, R12 and R13 independently represent a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms, R14...	11/16/1993
5210272	Process for forming a fluoromethyl ketone The preparation of magnesium benzyl fluoromalonate and other equivalent materials, the synthetic equivalents of the --CH2 F moiety, is described. Reaction between these reagents and the in situ-formed imidazolides of various carboxylic acids gi...	05/11/1993
4983774	Preparation of ketones by the acylation of organo-manganous compounds The preparation of ketones by reacting an acylating agent with an organo-manganous compound is catalyzed by a copper compound....	01/08/1991
4895985	Preparation of cyclopentanone The invention relates to a process for the preparation of cyclopentanone from adipic acid wherein adipic acid vapor in an inert gas at a temperature of from 250° C. to 450° C., possibly accompanied by water vapor, is passed over an oxygenous acidic or b...	01/23/1990
4827044	Process of preparation of ketones Process of preparation of ketones by the reaction of an organo-metallic compound with a compound carrying a carbonyl, within a solvent, in the presence of a manganous salt as catalyst. The manganous salt is in the form of a double salt of Mn and an alkali...	05/02/1989
4822920	Preparation of cyclopentanone Cyclopentanone is prepared from adipic esters by reacting adipic esters of the formula where R1 and R2 are alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 or 6 carbon atoms, aralkyl or aryl and R2 can additionally be hydrog...	04/18/1989
4788343	Production of cycloheptanone Cycloheptanone (suberone) is prepared by first evaporating suberic-acid esters which are reacted in alcoholic and/or aqueous dilution in the gas phase on aluminum oxide support catalyst doped with zinc oxide and/or cerium oxide at temperatures between 300...	11/29/1988
4764641	Process for preparing optically active carbonyl compounds A process is described for preparing optically active alpha-halogenated carbonyl compounds. This process consists of transforming the carbonyl compound into the corresponding acetal with tartaric acid or a derivative thereof, halogenating this acetal and ...	08/16/1988
4499307	Process for preparing 4,4A,5,6-tetrahydro-7-methyl-2-(3H)-naphthalenone, intermediates used in said process and novel crystalline form of same Described is a process for preparing 4,4A,5,6-tetrahydro-7-methyl-2-(3H)-naphthalenone having the structure: ##STR1## and intermediates useful in such process defined according to the structure: ##STR2## wherein one of R3 or R	02/12/1985
4440740	଱-Keto aldehydes as enhancing agents of gastro-intestinal drug absorption A method and drug form enhancing the absorption of a rectally or orally administered drug from the rectal compartment into the blood stream of a warm blooded animal. The method includes the steps of preparing a drug form capable of being rectally and oral...	04/03/1984
4407757	Aralkyl carboxylic acid compounds Novel compounds of the formulae ##STR1## wherein R represents lower alkyl or lower alkoxy, A represents --CH2 --, --CO-- or ##STR2## n represents an integer of 1 to 8, X represents hydrogen or hydroxyl which may be protected and ...	10/04/1983
4168280	Method for synthesis of 2-hydroxy-3-methyl cyclopent-2-ene-1-one The known compound 2-hydroxy-3-methyl cyclopent-2-ene-1-one, used as a flavor imparting agent and commonly called maple lactone, is synthesized by a modified acyloin condensation of esters of 2-methyl glutaric acid in which oxygen is introduced in a speci...	09/18/1979
4100202	Oxidative coupling of alkylphenols or 1-naphthols catalyzed by cupric complexes Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alkylphenols or 1-naphthols are prepared by contacting an aqueous mixture of an alkylphenol or 1-naphthol with oxygen in the presence of sufficient alkaline material to...	07/11/1978
4100203	Oxidative coupling of alkylphenols or 1-naphthols catalyzed by metal complexes of an oxime of a keto or aldehyde compound Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alkylphenols or 1-naphthols are prepared by contacting an aqueous mixture of an alkylphenol or 1-naphthol with oxygen in the presence of sufficient alkaline material to...	07/11/1978
4100205	Oxidative coupling of alkylphenols or 1-naphthols catalyzed by metal complexes of aminoketo compounds Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alkylphenols or 1-naphthols are prepared by contacting an aqueous mixture of an alkylphenol or 1-naphtol with oxygen in the presence of sufficient alkaline material to ...	07/11/1978
4100204	Oxidative coupling of alkylphenols or 1-naphthols catalyzed by metal complexes of a hydroxy- or keto-acid compound Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alkylphenols or 1-naphthols are prepared by contacting an aqueous mixture of an alkylphenol or 1-naphthol with oxygen in the presence of sufficient alkaline material to...	07/11/1978
4100206	Oxidative coupling of alkylphenols or 1-naphthols catalyzed by metal complexes of keto alcohol compounds Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alkylphenols or 1-naphthols are prepared by contacting an aqueous mixture of an alkyl phenol or 1-naphthol with oxygen in the presence of sufficient alkaline material t...	07/11/1978
4096190	Oxidative coupling of alkylphenols catalyzed by metal ammonia complexes Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alkylphenols are prepared by contacting an aqueous mixture of an alkyl phenol with oxygen in the presence of sufficient alkaline material to sustain a pH in the range o...	06/20/1978
3959382	Method for reactivating palladium catalysts Palladium catalysts employed in the hydrogenation of reducible cyclic organic compounds containing deleterious nitrogen impurities are reactivated according to a process comprising separating spent catalyst from the hydrogenation reaction mixture; contact...	05/25/1976

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Class 568/355 - Plural -COO- groups in the reactant