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Class 568/426 - Processes


Subclass of Class 568 - Organic compounds -- part of the class 532-570 series
Definition: Processes which are directed to the preparation, recovery,
No. of patents: 175
Last issue date: 01/03/2012


1          
NumberTitleIssue Date
RE43067Method for producing new polynuclear poly(formylphenol)
Produce the target substance, or a polynuclear poly(formylphenol) expressed by General Formula (2), in an industrial setting with ease and at high purity by causing a polynuclear poly(hydroxymethylphenol) or polynuclear poly(alkoxymethylphenol) to react with hexamet...
01/03/2012
7906687Method for the breakdown of lignin
The invention describes a method for the direct production of molecules with a minimum molecular weight of 78 g/mol by the breakdown of lignin, lignin derivatives, lignin fragments, and/or lignin-containing substances or mixtures in the presence of at least one poly...
03/15/2011
7795475Reaction device
A reaction device according to the present invention is used in production of aldehyde from alcohol. The reaction device includes a reactor having a reaction field where a catalyst is provided inside and a reaction fluid flows. The catalyst has a surface extending i...
09/14/2010
7750190Method for producing new polynuclear poly(formylphenol)
Produce the target substance, or a polynuclear poly(formylphenol) expressed by General Formula (2), in an industrial setting with ease and at high purity by causing a polynuclear poly(hydroxymethylphenol) or polynuclear poly(alkoxymethylphenol) to react with hexamet...
07/06/2010
7718827Process for the ruthenium-catalysed oxidation of alcohols by means of hypochlorite
The present invention relates to a process for preparing aldehydes or ketones using an alkali metal hypochlorite or an alkaline earth metal hypochlorite in the presence of a ruthenium catalysts. ...
05/18/2010
7619123Methods for stabilizing lithiated halogen-substituted aromatic compounds
The present invention provides novel methods for stabilizing lithiated halogen-substituted aromatic compounds. In particular, the method is useful for the preparation of 2-methoxy-5,6-difluorobenzaldehyde, an important intermediate for the preparation of [4-amino-2-...
11/17/2009
7544843Process for preparing 3,4-dioxo-substituted aromatic aldehydes
A new process for synthesizing 3,4-dioxo-substituted aromatic aldehydes by Oppenauer oxidation of the corresponding benzyl alcohols is described. The process, which specifically uses formaldehyde as hydrogen acceptor, proceeds with unexpectedly high yields and conve...
06/09/2009
7411100Process for the preparation of ring compounds
In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid...
08/12/2008
7342138Process for producing aromatic aldehyde
A process for producing an aromatic aldehyde compound represented by a general formula (3): (wherein R′ and n are as defined below), which comprises reacting a benzyl compound represented by a gen...
03/11/2008
7265249Enantioselective alpha-fluorination of aldehydes using chiral organic catalysts
Nonmetallic, chiral organic catalysts are used to catalyze enantioselective fluorination of enolizable aldehydes. Reaction systems composed of an enolizable aldehyde, an electrophilic fluorination reagent, and a nonmetallic chiral catalyst in the form of an imidazol...
09/04/2007
7183421Processes for producing oxide with higher oxidation than alcohol
The present invention provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound thereon and an oxidative catalyst thereon, and oxidizing the alcohol compound in the presen...
02/27/2007
7183443Process for the preparation of enantiomerically enriched compounds
Process for the preparation of enantiomerically enriched amino aldehydes and amino alcohols, wherein a corresponding enantiomerically enriched amino nitrile is subjected to hydrogenation in the presence of hydrogen, a hydrogenation catalyst, preferably a Pd-catalyst...
02/27/2007
7145043Non-Hazardous oxidative neutralization of aldehydes
Methods, compositions, and devices for alleviating the problems of toxic discharge of aldehydes present in waste streams are disclosed. The methods relate to forming neutralized aldehydes by treating aldehydes with oxidizing agents. The oxidizing agents offer a simp...
12/05/2006
7122705Method for preparing 3-cyclopentyloxy-4-methoxybenzaldehyde
Processes for coupling phenol and cycloalkyls including combining an optionally substituted phenol, a cycloalkyl substituted with a leaving group, carbonate salt, tetrahydrofuran, and an optional phase transfer agent are provided. Also provided are processes for pre...
10/17/2006
7034170Manganese(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
7030281Synthesis of 3,3,-dimethylbutyraldehyde by the reduction of 3,3,-dimethylbutyric acid
A process for the production of 3,3-dimethylbutyraldehyde is disclosed. The 3,3-dimethylbutyraldehyde is obtained by the reduction of 3,3-dimethylbutyric acid using trimethylacetic anhydride and a phosphine. The 3,3-dimethylbutyric acid is preferably obtained by a p...
04/18/2006
6909019Process for preparing aldehydes
A process is disclosed for preparing aldehydes by isomerization of the corresponding unsaturated primary alcohols using a transition metal catalyst system, in an alcoholic solvent and in the presence of an acid. An aldehyde forms by isomerizing an unsaturated primar...
06/21/2005
6797830Process for producing oxide with higher oxidation than alcohol
The present invention provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound thereon and an oxidative catalyst thereon, and oxidizing the alcohol compound in the presen...
09/28/2004
6790997Preparation of carbonyl compounds from alcohols
The invention relates to a process for the preparation of carbonyl compounds by the oxidation of alcohols in the presence of osmium compounds as catalysts in water or a solvent mixture containing water. ...
09/14/2004
6670510Process for preparing 2,5-dimethoxy benzaldehyde
The present invention recites a process for the of 2,5-dimethoxy-benzaldehyde by reacting a 2-hydroxy-5 methoxy-benzaldehyde with a suitable metal hydroxide in the presence of a suitable solvent to make a metal salt of 2-hydroxy-5-methoxy benzaldehyde com...
12/30/2003
6624336Process for producing tetrafluorobenzenemethanols
The present invention relates to a process by a series of reactions using tetrafluorocyanobenzens as material for producing tetrafluorobenzenemethanols, tetrafluorobenzenecarbaldehyde dialkylacetals and tetrafluorobenzenecarbaldehydes in a high purity and...
09/23/2003
6624331Process for the preparation of benzyloxyacetaldehyde
A process for producing benzyloxyacetaldehyde which comprises oxidizing 2-benzyloxyethanol with hypochlorous acid in the presence of a nitroxy radical having the general formula (I) ##STR1## wherein R represents a hydrogen atom, an acyloxy group, an alkox...
09/23/2003
6624330Method for stabilizing phenylacetaldehyde
The present invention relates to a method for stabilizing phenylacetaldehyde by adding at least one additive, in which case the additive contains one or more polybasic carboxylic acids....
09/23/2003
6596906Process for preparing fluorine-containing benzaldehydes
The invention relates to a particularly advantageous preparation of fluorine-containing benzaldehydes by reacting a corresponding aromatic acid chloride with hydrogen in the presence of a supported palladium catalyst and a catalyst moderator....
07/22/2003
6590127Process for the preparation of pharmacologically active ଱-asarone from toxic ଲ-asarone rich acorus calamus oil
The present invention relates to a process for the preparation of high purity and yield ଱-asarone, trans 2,4,5-trimethoxy cinnamaldehyde, 2,4,5-trimethoxy-phenyl propionone, from ଲ-asarone or ଲ-asarone rich Acorus calamus oil containing ...
07/08/2003
6590129Method for preparing aromatic carboxylic acids, aromatic aldehydes, and aromatic alcohols
An aromatic carboxylic acid, aromatic aldehyde, and aromatic alcohol are simultaneously and efficiently prepared by liquid phase oxidizing an aromatic compound represented by formula (I) with a gas containing molecular oxygen, in a presence of a catalyst ...
07/08/2003
6566535Processes for the preparation of 2,3-dihydrothiepine derivatives
A process for preparing a compound represented by the following formula: ##STR1## wherein each symbol is as defined below, or a salt thereof, characterized by subjecting a compound represented by the following formula: ##STR2## wherein R1 is an...
05/20/2003
6531634Non-hazardous oxidative neutralization of aldehydes
Methods, compositions, and devices for alleviating the problems of toxic discharge of aldehydes present in waste streams are disclosed. The methods relate to forming neutralized aldehydes by treating aldehydes with oxidizing agents. The oxidizing agents o...
03/11/2003
6509507Polymerizable biaryls, process for their preparation and their use
A process for preparing polymerizable biaryl derivatives comprises reacting an aromatic comprising a 6-membered ring which bears ester or benzylic OH groups in the 1,4 position with a second aromatic in a palladium-catalyzed cross-coupling reaction to giv...
01/21/2003
6506932Method for production of oxygen-containing aromatic compound
A method for oxidizing an aromatic compound possesssing at least one alkyl substituent by using a catalyst avoids containing a corrosive bromine ion, remains stably without being decomposed even in an oxidizing atmospherfe, and permits reclamation is prov...
01/14/2003
6495726Process for the production of benzaldehyde by the catalytic liquid phase air oxidation of toluene
The present invention relates to an improved process for the production of benzaldehyde with 40-50% selectivity comprising by catalytic liquid phase air oxidation of toluene. The process involves providing a continuous flow of air in the presence of a cat...
12/17/2002
6448448Process for the non-oxidative preparation of formaldehyde from methanol
The invention relates to a method for producing formaldehyde from methanol by non-oxidative dehydrogenation, in a reactor, in the presence of a catalyst at a temperature between 300 and 1000° C. Said method is characterized in that the generation of the ...
09/10/2002
6441246Catalytic synthesis of aldehydes by direct hydrogenation of carboxylic acids
A process which makes it possible to prepare aldehydes under mild reaction conditions with a high efficiency through the reduction of carboxylic acids with molecular hydrogen. Specifically, a process of reducing an organic carboxylic acid with molecular h...
08/27/2002
6441243Process for the selective oxidation of alcohols using readily removable nitroxyl radicals
The invention relates to a process for the selective oxidation of alcohols to ketones or to aldehydes by means of an alkali hypohalite under alkaline conditions, which comprises carrying out the oxidation in the presence of a heterogeneous oxidation catal...
08/27/2002
6384273Method for orthometalation of a carbocyclic aromatic derivative bearing at least an electron donor group
The invention concerns a method for orthometalation of a carbocyclic aromatic derivative bearing at least an electron donor group, characterised in that it consists in reacting said carbocyclic aromatic derivative with an efficient amount of at least one ...
05/07/2002
6353140Process for the purification of cyclopropanecarboxaldehyde
Disclosed is process for the treatment of cyclopropanecarboxaldehdye (CPCA) which contains crotonaldehyde impurity with a base at elevated temperature to convert the crotonaldehyde to one or more higher boiling compounds followed by distillation to recove...
03/05/2002
6331655Process for the preparation of aromatic carbonyl compounds from styrenes
The present invention relates to a novel process for the preparation of aromatic carbonyl compounds by oxidative cleavage of styrenes using lipases and hydrogen peroxide or hydrogen peroxide donors in the presence of carboxylic acids or carboxylic esters....
12/18/2001
6323373Polymerizable biaryls, method for the production and use thereof
A process for preparing polymerizable biaryl derivatives comprises reacting an aromatic comprising a 6-membered ring which bears ester or benzylic OH groups in the 1,4 position with a second aromatic in a palladium-catalyzed cross-coupling reaction to giv...
11/27/2001
6313354Method for producing aromatic aldehydes
A process for the preparation of aromatic aldehydes comprising the steps of condensing a phenone ketal with a vinyl ether in the presence of a Lewis acid, subjecting the resulting acetal to acidic hydrolysis to form the corresponding ଱,ଲ-unsat...
11/06/2001
6291721Processes for the preparation of 2-arylvinyl alkyl ether and 1,4-diaryl-2-fluoro-2-butene compounds
An improved process for the preparation of 2-arylvinyl alkyl ether compounds of the structural formula I ##STR1## In addition, the present invention provides an improved process for the preparation of 1,4-diaryl-2-fluoro-2-butene compounds of the structur...
09/18/2001
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