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| Number | Title | Issue Date |
| 8173846 | Substituted cyclohexenones The present invention relates to a method of preparation of an optically active cyclohexenone derivative of Formula (I) OR1R2*R1 and wherein R1 and R2 are organic residues. ... | 05/08/2012 |
| 8093432 | Processes for epimerizing cyclohexenyl ketones with subsequent aldol condensation to produce fragrance compounds The present disclosure describes processes for the epimerization of a cyclohexene comprising the steps of providing to a reactor a first isomer of a 1-(2-alkyl-3-cyclohexen-1-yl)-alkanone compound according to Formula I whe... | 01/10/2012 |
| 8067644 | Process for conducting an organic reaction in ionic liquids The present disclosure describes processes for producing cyclohexenes using Lewis acidic ionic liquids comprising the steps of providing to a reactor an α,β-unsaturated carbonyl dienophile, providing to the reactor a 1,3-diene, providing a Lewis acidic ionic liqui... | 11/29/2011 |
| 7858828 | Process for synthesis of (3R,3'R,6'R)-lutein and its stereoisomers (3R,3′R,6′R)-Lutein and (3R,3′R)-zeaxanthin are two dietary carotenoids that are present in most fruits and vegetables commonly consumed in the US. These carotenoids accumulate in the human plasma, major organs, and ocular tissues. In the past decade, numerous... | 12/28/2010 |
| 7754925 | Method for the hydrogenation of mass fluxes containing aldehyde The present application relates to a process for reacting a composition I comprising at least one aldehyde with hydrogen in the presence of a catalyst in at least one main reactor and at least one postreactor, wherein at least 50% of the fresh hydrogen fed to the re... | 07/13/2010 |
| 7495132 | Catalytically active composition and the use thereof in dehydration methods The present invention relates to a catalytically active composition comprising as active component Pd and Bi and at least one element selected from the group (a) consisting of Rh, Au, Sb, V, Cr, W, Mn, Fe, Co, Ni, ... | 02/24/2009 |
| 7470820 | Substituted cyclohexanones The present invention relates to a cyclohexanone derivative of formula in the form of any one of its isomers or mixture thereof. The invention concerns also the preparation and the use of this derivative. The compounds of t... | 12/30/2008 |
| 7442841 | Extraction process A process for the separation of an alcohol from a non-polar solvent; a ketone from a non-polar solvent; an alcohol from a mixture of a ketone and a non-polar solvent; or a mixture ... | 10/28/2008 |
| 7378558 | Method for producing carotenoids A process for preparing carotenoids, in which the process includes reacting a dialkoxy dialdehyde in a double Wittig condensation with a phosphonium salt of or in a double Wittig-Horner condensation with a phosphonate. The carotenoids include, for example, β-carote... | 05/27/2008 |
| 7348304 | Fragrance material The invention provides a novel fragrance material comprising a compound having the structure (IUPAC name (1R,2S,7R,8R,9S)-2,6,6,9-tetramethyltricyclo-[5.4.0.02,8]undecan-10-one). The novel fragrance material has ... | 03/25/2008 |
| 7332633 | Process for the preparation of optically active cyclohexenones The present invention relates to a process for the preparation of an optically active 5-substituted cyclohexenone (II) by treating an achiral macrocyclic 3-substituted-1,5-diketone (I) in the presence of an optically active sodium, potassium or cesium alkoxide. ... | 02/19/2008 |
| 7323604 | Hydride reduction of α,β-unsaturated carbonyl compounds using chiral organic catalysts Nonmetallic, chiral organic catalysts are used to catalyze the 1,4-hydride reduction of an α,β-unsaturated carbonyl compound. The α,β-unsaturated carbonyl compound may be an aldehyde or cyclic ketone, and the hydride donor may be a dihydropyridine. The reaction ... | 01/29/2008 |
| 7285685 | Method 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 |
| 7285684 | Process for separating imide compounds A reaction mixture obtained by reacting a substrate in the presence of an imide compound having an imide unit represented by the formula (1) can be efficiently separated through crystallization and/or extraction with a specific solvent into the imide compound and a ... | 10/23/2007 |
| 7279605 | Synthesis of cyclopentenones The invention relates to a process for the preparation, in a single step, of substituted 2-cyclopenten-1-ones by reacting a substituted enone with an aldehyde in the presence of a catalytic system. The catalytic system consists of a metal complex, such as a Ti(Cl) | 10/09/2007 |
| 7247752 | Methods for the synthesis of astaxanthin A method used for synthesizing intermediates for use in the synthesis of carotenoids and carotenoid analogs, and/or carotenoid derivatives. In some embodiments, the invention includes methods for synthesizing optically active intermediates useful for the synthesis o... | 07/24/2007 |
| 7235700 | Process for producing cyclohexenone long-chain alcohols A process for producing cyclohexenone long-chain alcohol represented by the following formula (1): (wherein A represents a C10-C18 alkylene or alkenylene group, and each of R1, R2, and R3 individually represents hydrogen or methyl), ... | 06/26/2007 |
| 7227044 | Cycloalkanone composition The present invention relates to a cycloalkanone composition which contains cycloalkanone (1) in an amount of 70 wt % or more based on the composition, wherein the content of a dimer of a cycloalkanone represented by formula (2) is 0.055 or less in terms of weight r... | 06/05/2007 |
| 7141698 | Continuous process for producing pseudoionones and ionones The invention relates to a continuous process for producing pseudoionones of general formulas (I) and (I′) as well as isomers thereof, whereby: R1 represents CH3 or (a); R2 and R3 represent hydrogen, CH3 or C | 11/28/2006 |
| 7078559 | Method of producing acetate derivative The present invention relates to a method of producing an acetate derivative represented by the formula (II) by demonocarboxylating dimalonate represented by the formula (I), wherein water is supplied while the concentration of water in a demonocarboxylating reactio... | 07/18/2006 |
| 7042289 | Transconductance control circuit of rail-to-rail differential input stages A transconductance control circuit of a rail-to-rail differential input stage is described. The transconductance control circuit senses the gate-source voltages of PMOS and NMOS differential pairs, converts the sensed voltage to a current, compares the current with ... | 05/09/2006 |
| 7012161 | Compound, fluorine-containing polymerizable cyclic olefin compound There is disclosed a fluorine-containing polymerizable cyclic olefin compound that has one or more partial structures represented by the following general formula (1) or (2). There can be provided a novel fluorine-containing polymerizable cyclic olefin compound whic... | 03/14/2006 |
| 6943272 | Norbornane and norbornene derivatives, use thereof and perfumed products containing same The invention concerns a novel compounds of formula (I), wherein the dotted line bond is present or not, and wherein R1 represents: when the dotted line bond is present —CHCH3OH or —CHCH3OCOR or —CHCH3XCH2... | 09/13/2005 |
| 6872856 | Cyclic ketones, their preparation and their use in the synthesis of amino acids A method is provided for making an enantiomerically pure compound of the formula: in which R and R′ represent C1?C10 alkyl, C2?C10 alkenyl or C3?C10 cycloalkyl and the wedges signify (S)- or (R)-stereochemistry, the substituents in compound (II) being trans. Conju... | 03/29/2005 |
| 6815413 | Macrocyclic ketones Lower alkyl- and lower alkylidene-substituted, saturated or unsaturated cyclohexadecanones are grand fragrances with muscone note with which perfumes with new odor notes can be prepared. ... | 11/09/2004 |
| 6787655 | Asymmetric 1,4-reductions of and 1,4-additions to enoates and related systems One aspect of the present invention relates to methods for the transition-metal-catalyzed asymmetric 1,4-addition of a nucleophile, e.g., hydride, to cyclic and acyclic enoates and enones. In certain embodiments of the methods of the present invention, the transitio... | 09/07/2004 |
| 6642418 | Processes for preparing intermediates The invention relates to processes for the preparation of compounds of formula (I), wherein R1 and R2 are as defined in the description. ##STR1##... | 11/04/2003 |
| 6590111 | Selective reduction of alkyne compounds A process is provided for the preparation of cyclohexene derivatives of general formula I or II: ##STR1## in which the substituents R1 and R2 independently of one another are defined as follows: ##STR2## R2 is OH or a... | 07/08/2003 |
| 6559343 | Process for producing 2,2,4,4-tetra-substituted 1,3,5-cyclohexanetriones Process for the preparation of 2,2,4,4-tetrasubstituted 1,3,5-cyclohexanetriones of the formula I, ##STR1## by reaction of a cyclobutane-1,3-dione of the formula II ##STR2## with an O or N nucleophile and a silylating reagent, and subsequent acetylat... | 05/06/2003 |
| 6545185 | Preparation of ketones from aldehydes A method and apparatus for the production of ketones via a one-step synthesis from aldehydes. In the method of the invention, an aldehyde, a carboxylic acid, and a source of oxygen, such as water, are allowed to react in the vapor phase in a catalytic tub... | 04/08/2003 |
| 6515137 | Catalytic processes employing chiral imidazolidinone-based catalyst composition Acid addition salts of imidazolidinones are provided as catalysts for transforming a functional group within a first reactant by reaction with a second reactant. Exemplary first reactants are ,ଲ-unsaturated carbonyl compounds such as ,... | 02/04/2003 |
| 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 |
| 6468949 | Cyclohexenyl cyclopropyl ketone The present invention is directed to cyclopropyl-2,6,6-trimethylcyclohex-3-enyl ketone and is use in creating perfumes and scents in such items as perfumes, colognes, toilet water and personal care products.... | 10/22/2002 |
| 6469215 | Process for the production of an intermediate mixture of ଲ-isophorone epoxide and its isomer 4-hydroxyisophorone (HIP) A process for the production of an intermediate mixture of ଲ-isophorone epoxide and its isomer 4-hydroxyisophorone (HIP), comprising reacting ଲ-isophorone with an organic percarboxylic acid, in the form of its non-aqueous solution, in an inert... | 10/22/2002 |
| 6465664 | Asymmetric 1,4-reductions of and 1,4-additions to enoates and related systems One aspect of the present invention relates to methods for the transition-metal-catalyzed asymmetric 1,4-addition of a nucleophile, e.g., hydride, to cyclic and acyclic enoates and enones. In certain embodiments of the methods of the present invention, th... | 10/15/2002 |
| 6437190 | Preparation 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 |
| 6433230 | Process 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 |
| 6433229 | Method of producing cyclic, , ଲ-unsaturated ketones Preparation of cyclic, ,ଲ-unsaturated ketones of formula II by dehydrogenation of cyclic ketones which conform to formula I ##STR1## in which n denotes an integer from 1 to 10, and which may be substituted, at elevated temperature in the pres... | 08/13/2002 |
| 6420609 | Process for the production of 2,2,6-trimethylcyclohexane-1,4-dione Process for the production of 2,2,6-trimethylcyclohexane-1,4-dione by epoxidation of ଲ-isophorone with organic percarboxylic acids at a water content below 5 wt.-% and subsequent isomerization of the mixture of ଲ-isophorone epoxide and hydroxy... | 07/16/2002 |
| 6392099 | Method and apparatus for the preparation of ketones A method for continuously producing a ketone in a tube reactor at elevated weight hourly space velocities and in the presence of a catalyst from feed material comprised of a first carboxylic acid or aldehyde or their derivatives and a second carboxylic ac... | 05/21/2002 |
