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Patent No. 6055910

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Class 568/388 - Aldehyde or ketone reactant


Subclass of Class 568 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the compound is prepared by reacting an
No. of patents: 149
Last issue date: 02/07/2012


1        
NumberTitleIssue Date
8110708Synthesizing and utilizing novel ruthenium nanoparticle-activated charcoal-nano-zinc oxide composite catalyst
Ruthenium/activated charcoal (Ru/AC) treated with synthesized nano-ZnO (n-ZnO) is used for the first time as a novel composite catalyst in one-step self-condensation of acetone (DMK) to methyl isobutyl ketone in the gas phase. The DMK self-condensation was performed...
02/07/2012
8101805Low pressure one-step gas-phase process for production of methyl isobutyl ketone
A low-pressure one-step gas-phase process for the production and recovery of methyl isobutyl ketone (MIBK) is disclosed. One-step gas-phase synthesis of MIBK from acetone and hydrogen over nano-Pd/nano-ZnCr2O4 catalyst at atmospheric pressure i...
01/24/2012
7973198Method for synthesizing optically active carbonyl compounds
The present invention relates to a process for preparing optically active carbonyl compounds by asymmetrically hydrogenating α,β-unsaturated carbonyl compounds in the presence of optically active transition metal catalysts which are soluble in the reaction mixture...
07/05/2011
7951976Synthesizing and utilizing novel nano crystalline zinc chromate supported nano palladium catalyst
Several metal-supported catalyst compositions based on nano-crystalline zinc oxide were synthesized and characterized by X-ray powder diffraction (XRD), Carbon dioxide temperature programmed desorption (CO2 TPD), and nitrogen adsorption at −196° C. The...
05/31/2011
7855311Formation of hydroxycarbonyl compounds
Aldehyde and ketone reactants are converted to hydroxyaldehydes, polyhydroxyaldehydes, hydroxyketones and/or polyhydroxyketones in liquid phase by an aldol condensation process where a selected product carbon chain length is produced using specific concentrations of...
12/21/2010
7767863Method to make methyl isobutyl ketone and diisobutyl ketone
An improved method for the manufacture of MIBK and DIBK from DMK and/or IPA, by reacting, in the presence of an aldol condensation catalyst, a gaseous mixture comprising hydrogen and DMK and/or IPA. The improvement is the use of a reaction pressure greater than 207 ...
08/03/2010
7671239Method and apparatus for producing purified methyl isobutyl ketone
This invention relates to a method of producing purified methyl isobutyl ketone (MIBK) comprising subjecting a feed stream containing MIBK and impurities to a first distillation procedure from which acetone is recovered. The bottom product of the first distillation ...
03/02/2010
7504542Preparation of α-hydroxy ketones via carbene-catalyzed umpolung reaction of aldehydes
The present invention relates to the preparation of α-hydroxy ketones of the general formula I. In particular, the invention relates to novel imidazolinium carboxylate adducts and to a novel process for using catalytic amounts of imidazolium and imidazolinium carbo...
03/17/2009
7456322Process for preparing 1,3-dibromoacetone, 1-3-dichloroacetone and epichlorohydrin
A process for preparing 1,3-dibromoacetone, 1-3-dichloroacetone and epichlorohydrin which comprises: (a) re-acting acetone with 2 moles of bromine to make a mixture of brominated acetone derivatives and byproduct hydrogen bromide; (b) equilibrating the mixture of br...
11/25/2008
7393982Processes for preparing β-diketone compound, metal complex thereof and metallic compound
Disclosed is a process for preparing a β-diketone compound such as 2,6-dimethyl-3,5-heptanedione, which comprises reacting an ester compound such as an alkyl isobutyrate with a ketone compound such as 3-methylbutanone in the presence of an alkali metal alkoxide as ...
07/01/2008
7354883Catalyst and method for the production of 1-olefins from 2-hydroxylkanes
The present invention relates to a process for preparing 1-olefins from 2-hydroxyalkanes by catalytic elimination of water under nonisomerizing conditions and to a catalyst which is particularly well-suited for this process and formally comprises yttrium oxide (Y
04/08/2008
7351850Process for producing alphaoxocarbonyl compound
A process by which an α-oxocarbonyl compound useful as an intermediate for pharmaceuticals/agricultural chemicals can be industrially advantageously and efficiently produced in a high yield. The process, which is for producing an α-oxocarbonyl compound represented...
04/01/2008
7345205Method for the production of tetrahydrogeranylacetone
A process is described for preparing tetrahydrogeranylacetone in which pseudoionone, geranylacetone and/or dihydrogeranylacetone in a liquid phase, in which particles of a catalyst which is capable of preferentially hydrogenating carbon-carbon double bonds over carb...
03/18/2008
7345206Process for the dimerisation of alkyl glyoxals
The present invention relates to the field of organic synthesis and more particularly to a new process for the dimerisation of alkyl glyoxals, said process being promoted by an alkaline salt of the hydroxymethanesulfinic acid and is performed at a pH comprised betwe...
03/18/2008
7341988Method of treating influenza with geranyl-geranyl acetone
To provide a novel preventive and/or therapeutic agent against a virus, disclosed is a preventive and/or therapeutic agent against a viral infection containing geranyl-geranyl acetone as an active ingredient. Also, disclosed are inducers for increasing the activity ...
03/11/2008
7323603Method for aldol reaction in water
A method for aldol reaction in water, which comprises: reacting an aldehyde with a silyl enol ether in an aqueous medium in the presence of a boronic acid represented by the following general formula (1): R1R2BOH  (1) (w...
01/29/2008
7285685Method for dehydrogenation of carbonyl compounds
Process for preparing alpha, beta-unsaturated acyclic or cyclic carbonyl compounds by dehydrogenation of the corresponding saturated carbonyl compounds in the gas phase over a heterogeneous dehydrogenation catalyst comprising platinum and/or palladium and tin on an ...
10/23/2007
7282153Method for removal of arsenic from water
A method for removing arsenic from water by contacting water with a strong base anion exchange resin comprising at least one metal ion or metal-containing ion whose arsenate salt has a Ksp no greater than 10−5, provided that the metal is not ...
10/16/2007
7119234Process for the preparation of 1-(4-chlorophenyl)-4,4-dimethylpent-1-ene-3-one
The present invention relates to a method for the preparation of as 1-(4-Chlorophenyl)-4,4-dimethylpent-1-ene-3-one, also known as Phenyl aldol. The process of the present invention utilizes catalysts. The process enables the manufacture of the Phenyl aldol in the a...
10/10/2006
7084306Process for preparing β-diketone compound and process for preparing metal complex thereof
Disclosed is a process for preparing 2,2,6,6-tetramethyl-3,5-heptanedione, comprising reacting a pivalic acid alkyl ester with pinacolone in the presence of an alkali metal alkoxide catalyst using a pivalic acid alkyl ester as a solvent but using no other solvent or...
08/01/2006
7074972Secondary C-Csurfactant alcohols
The invention relates to secondary C10 to C18 surfactant alcohols of the general formula (I), wherein R represents methyl or ethyl and R′ represents a linear or branched alkyl group with 6–13 C atoms, excepting 5-ethyl-2-nonanol and 6-ethyl...
07/11/2006
7071361Processes for the preparation of high molecular weight saturated ketones
Continuous single-step processes for producing higher molecular weight ketones are disclosed that involve a liquid-phase crossed condensation of an aldehyde with a ketone in the presence of a hydrogenation catalyst and a small amount of a catalyst comprising a conce...
07/04/2006
7030280Process for producing optically active β-trifluoromethyl-β-hydroxycarbonyl compound
The present invention provides a process for producing an optically active β-trifluoromethyl-β-hydroxycarbonyl compound represented by formula (3): comprising a step of reacting a fluoral equivalent represented by for...
04/18/2006
7005551Acetaldehyde process
A process is provided for the production of acetaldehyde from formaldehyde and methyl chloride. In the process formaldehyde is reacted in the vapor phase with methyl chloride to produce acetaldehyde and hydrogen chloride. The byproduct hydrogen chloride may be recov...
02/28/2006
6977314Metal-doped sulfonated ion exchange resin catalysts
A method for preparing ketones in greater yield and selectivity compared to previous catalyzed reactions by acid-catalyzed condensation reaction using a metal-doped polysulfonated ion exchange resin catalyst is disclosed. For example, use of polysulfonated ion excha...
12/20/2005
6933414Acetone process
A process is provided for the production of acetone from formaldehyde and methyl chloride. In the process formaldehyde is reacted in the vapor phase with methyl chloride to produce acetone and hydrogen chloride. Acetaldehyde may be formed as an intermediate in the r...
08/23/2005
6872854Complexes of metal salts of organic acids and beta-diketones and methods for producing same
Metal salts of organic acids complexed with β-diketone compounds are multifunctional complexes useful in the formulation of stabilizers for halogenated resins. These complexes may be used jointly with other low toxicity intermediates, such as zinc or magnesium inte...
03/29/2005
6780812Chiral lead catalyst and method of asymmetric aldol reaction
A novel chiral lead catalyst comprising a lead compound of the following formula: Pb(ORf)2 (wherein Rf represents a fluorine-containing alkylsulfonyl group) and a chiral crown ether compound hav...
08/24/2004
6706928Aldol condensation reaction and catalyst therefor
Production of unsaturated ketones by the aldol condensation of ketones such as acetone or methyl ethyl ketone by contacting the ketone in the vapor phase with a particulate catalyst comprising at least one basic alkali metal compound supported on an inert substrate ...
03/16/2004
6689918Method for producing dicarbonyl compounds
A method for producing ଱-dicarbonyl compounds of formula (I): ##STR1## wherein R1 and R2, independently of each other, mean C1-6 -alkyl. In the method, an ଱,ଲ-unsaturated ketone of formula (II): ##ST...
02/10/2004
6667410Conversion of ଱,ଲ-unsaturated ketones and ଱,ଲ-unsaturated esters into ଱-hydroxy ketones and ଱-hydroxy esters using Mn(III) catalyst, phenylsilane and dioxygen
The present invention provides a novel process for the conversion of ଱,ଲ-unsaturated ketones. This invention is an improvement over existing processes in that it operates at neutral reaction conditions that prevent the formation of side reacti...
12/23/2003
6639112Method for preparing ketones by pyrogenic reaction of aldehydes, alcohols, acids or esters
The invention concerns a method for preparing ketones of formula (I) wherein A and B are as defined in claim 1, consisting of reacting at a temperature ranging between 250 and 500° C. a compound of formula (II): A--X with a compound of formula (III): B--...
10/28/2003
6525227Method of reaction in water catalyzed by Lewis acid
A reaction method by a novel Lewis acid catalyst stable in water for organic synthesis by using a metal compound stable in water and functioning as a Lewis acid catalyst and using water as apart or all of a solvent, the metal ion of the metal compound hav...
02/25/2003
6437190Preparation of aldols using a microstructured reaction system
A process for preparing aldols by catalytic reaction of aldehydes and/or ketones comprises conducting said reaction in the channels of a microstructured reaction system....
08/20/2002
6433230Process for conducting an aldol condensation
଱,ଲ-Unsaturated keto compounds are prepared by base-catalyzed aldol condensation of aldehydes and/or ketones having from 1 to 15 carbon atoms, comprising: reacting the aldehydes and/or ketones with an aqueous catalyst solution under adiabatic ...
08/13/2002
6417406Process for the production of 6-methyl heptanone
The present invention provides a process for producing 6-methyl heptanone and corresponding methyl ketones, in particular phytone and tetrahydrogeranyl acetone, by aldolization of aldehydes with acetone in the presence of an aldolization catalyst and a he...
07/09/2002
6410795Process for base-promoted condensation reactions and base reagent therefor
A method for the preparation of 1,3-diketones is disclosed wherein the method comprises the steps of: (A) mixing an alkali metal base with a hindered alcohol in an aromatic hydrocarbon solvent; (B) boiling the mixture and azeotropically distilling water formed...
06/25/2002
6403346Enzymatic processes for producing intermediates useful in the manufacture of retiferol derivatives
Enzymatic processes can produce intermediates for manufacturing retiferol derivatives that are useful for treating or preventing hyperproliferative skin diseases and for reversing conditions associated with photodamage. These processes can use as a starti...
06/11/2002
6329554Continuous preparation of unsaturated ketones
Process for the continuous preparation of unsaturated ketones of the formula I ##STR1## where the dashed line can be an additional C--C bond, R1 is an alkyl, and R2 is an aliphatic hydrocarbon having from 1 to 37 carbons, a cycl...
12/11/2001
6300524Process for preparing higher unsaturated ketones
The present invention relates to an improved process for preparing higher unsaturated ketones by reacting the corresponding ଱,ଲ-unsaturated alcohols with alkyl acetoacetates in a Carroll reaction , in a reactor system with fitted fractionation...
10/09/2001
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