Class 560/203 - Preparing esters by alkylation or isomerization

Subclass of Class 560 - Organic compounds -- part of the class 532-570 series
No. of patents: 32
Last issue date: 01/04/2011

Number	Title	Issue Date
7863478	UV filters The invention relates to compounds of the formula (I) or (II), to compositions which comprise such compounds, to corresponding processes for the preparation of the compounds or the compositions comprising same, and to the use thereof as light-protection filters....	01/04/2011
7335799	Hydroxyl compounds and compositions for cholesterol management and related uses The present invention relates to novel hydroxyl compounds, compositions comprising hydroxyl compounds, and methods useful for treating and preventing a variety of diseases and conditions such as, but not limited to aging, Alzheimer's Disease, cancer, cardiovascular ...	02/26/2008
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
7038072	Process for monoalkylation of C-H acidic methylene groups The present invention is directed to a process for the synthesis of monoalkylated C—H acidic methylene group-containing compounds, such as malonic esters, and malonic ester nitriles. ...	05/02/2006
6740193	Gem-diesters and epoxidized derivatives thereof In accordance with the present invention, there are provided gem-diesters and epoxidized derivatives thereof. When cured, thermosets comprising invention gem-diesters and epoxidized derivatives thereof have thermally and/or chemically labile gem-diester groups inter...	05/25/2004
6646155	Method for producing esters of ଱, ଲ-unsaturated carboxylic acids An ester of an ଱,ଲ-unsaturated carboxylic acid is prepared by reacting the carboxylic acid with a C6 -C12 -alkanol, cyclopentanol or cyclohexanol in the presence of an acidic esterification catalyst and of an entraining a...	11/11/2003
6555703	Process for the preparation of carboxylic acid benzyl esters The invention relates to a process for forming a carboxylic benzyl ester comprising reacting a dibenzyl ether with a carboxylic acid in the presence of a heteropolyacid and forming a carboxylic acid benzyl ester....	04/29/2003
6541655	Catalytic compositions and methods for asymmetric allylic alkylation Complexes of a selected class of chiral ligands with molybdenum, tungsten or chromium, preferably molybdenum, are effective as catalysts in highly enantioselective and regioselective alkylation of allylic substrates....	04/01/2003
6534657	Chiral ferrocene phosphines and their use in asymmetric catalytic reactions Ferrocene anchored chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation...	03/18/2003
6462224	Process for the preparation of 1,1-cyclopropanedicarboxylic diesters 1,1-cyclopropanedicarboxylic diesters are prepared from malonic diesters, 1,2-dihaloethane and alkali metal carbonate in the presence of a mixture of available or in situ-produced phase transfer catalyst and polyalkylene glycol or derivatives thereof whic...	10/08/2002
6417391	Process for the preparation of 2-methyl-1,3-dicarboxylates A process for the preparation of a 2-methyl-1,3-dicarboxylate by reaction of a 1,3-dicarboxylate with formaldehyde and hydrogen, where, based on 1 mol of dicarboxylate, from 1.0 to 2.0 mol of formaldehyde are used, and either the reaction mixture or 2-hyd...	07/09/2002
6350898	Process for preparing malonic esters Malonic esters of the general formula ##STR1## where R is C1-10 -alkyl, C3-10 -alkenyl or aryl-C1-4 -alkyl, are prepared by reacting an alkali metal salt of malonic acid with a halide of the general formula R--X (II), wher...	02/26/2002
6333430	Process for preparing tert-alkyl ester from carboxylic acid A process for preparing a tert-alkyl carboxylic acid ester represented by the formula (III): ##STR1## wherein R1 is an organic group; and each of R2 and R3 is independently an alkyl group having 1 to 4 carbon atoms, compri...	12/25/2001
6310003	Composition of chemicals for manipulating the behavior of the orange wheat blossom midge, sitodiplosis mosellana (Gehin) The invention relates to a composition and procedure for manipulating the behavior of the orange wheat blossom midge, Sitodiplosis mosellana. More importantly, this invention relates to the preparation and use of 2,7-nonanediyl dibutyrate or stereoisomers...	10/30/2001
6278015	Process for trifluoroacetate esters and thioesters The present invention provides a process for preparing esters or thioesters of trifluoroacetic acid from trifluoroacetyl chloride and an alcohol or a thiol with the ester or thioester being present as the solvent. Esters and thioesters of trifluoroacetic ...	08/21/2001
6262298	Process for the C-alkylation of malonic esters using phase-transfer agents The invention relates to a process for the C-alkylation of dialkyl malonates, in which a dialkyl malonate is reacted with an alkyl halide in the presence of potassium carbonate as a hydrogen halide acceptor in an inert solvent, and a phase-transfer cataly...	07/17/2001
6215035	Process for the preparation of aralkylated aromatic compounds using heterogeneous catalyst The invention relates to a process for the preparation of aralkylated aromatic compound with both small and large size aralkylating agents; wherein the catalyst used is heterogeneous solid catalyst removable from the reaction products by simple filtration...	04/10/2001
6049010	Method of preparing 3-(3-methyl-2-buten-1-yl)-2,4-pentanedione and related dicarbonyl compounds A method for preparation of a dicarbonyl compound of the following formula ##STR1## by reacting a conjugated alkadiene compound of the formula ##STR2## with a 1,3-dicarbonyl compound of the formula ##STR3## in the presence of an acid cataly...	04/11/2000
5739375	Methylation of organic compounds Methyl compounds are prepared from carbon acids by reaction with dimethyl carbonate in the presence of a nitrogen-containing base....	04/14/1998
4943397	Metathesis of functional olefins The present invention relates to a process for metathesizing an olefin having at least one terminal functional group which comprises contacting said olefin at metathesis conditions with a catalyst comprising: (a) a transition metal selected from tungsten,...	07/24/1990
4943396	Process for preparing linear alpha, omega difunctional molecules The present invention relates to a process for preparing linear alpha, omega difunctional molecules by a process which comprises isomerizing olefins having at least one terminal functional group to form a mixture of functionalized olefinic isomers and met...	07/24/1990
4894471	Continuous process for the alkylation of CH-acid compounds with alkyl carbonates in gas-liquid phase transfer catalysis-conditions A continuous process for the alkylation of CH-acid compounds with dialkyl carbonates in gas-liquid phase transfer catalysis conditions is described, consisting of contacting a mixture of a CH-acid compound (arylacetonitrile or malonic diester) and of a di...	01/16/1990
4808747	Process for producing alkylidene compounds and arylidene compounds Alkylidene compounds and arylidene compounds are prepared by reacting the corresponding CH-acidic compounds with carbonyl compounds in the presence of a catalyst comprising a metal compound of a metal of Groups IIA, IIIA, IVA, IB, IIB, VIB, VIIB, or VIIIB...	02/28/1989
4667050	Preparation of pyrethroid precursors Substituted vinylcyclopropane carboxylates, useful precursors to pyrethroid insecticides, are prepared by noble metal catalyzed addition of 1-methyl-3-buten-2-yl or 4-methyl-3-penten-1-yl carbonates or carboxylic acid esters to malonic acid diesters, alky...	05/19/1987
4428887	Method of producing mono-substituted terminal diesters Mono-substituted terminal diesters of malonic acid are prepared by reaction of the corresponding substituted 1,2-diesters with alkali metal hydride in the presence of organic solvent medium....	01/31/1984
4241216	Phthalic acid diester preparation with waste stream purification and recycle A continuous process for the preparation in at least one esterification reactor of phthalate diesters utilizing phthalic acid or anhydride and a stoichiometric excess of at least one saturated aliphatic alcohol containing about 4 to about 10 carbon atoms ...	12/23/1980
4235786	Process for producing oil-soluble derivatives of unsaturated C₄ -C.sub . An improved process for preparing oil-soluble derivatives of unsaturated C4 -C10 dicarboxylic acid materials, e.g. the product of the reaction of polyisobutylene and maleic anhydride, under Ene reaction conditions characterized in th...	11/25/1980
4100200	Use of novel ethers as oxydimethylating agents A compound having the formula wherein R is alkyl, is prepared by reacting a compound having the formula ##STR1## wherein R and R' are alkyl with a cyclic polyoxymethylene or a linear polyoxymethylene in a substantially humidity-free environment. The ...	07/11/1978
4064185	Olefinically unsaturated substituents at C-11 of steroid cyclization precursors Compositions are provided as well as methods for preparing the compositions which serve as cyclization precursors for the preparation of C-11 alkenyl substituted steroids and nor-steroids. The alkenyl group may be converted after cyclization to a variety ...	12/20/1977
4039560	Method of producing modified polyethylene wax A method of producing a modified waxy ethylene polymer, which comprises polymerizing ethylene in an inert hydrocarbon solvent at 120° - 250° C. and pressure ranging from the vapor pressure of the solvent at the polymerization temperature to 100 Kg/cm	08/02/1977
4032651	3,3A,6,6A-Tetrahydrofuro[3,4-b]furan derivatives and anti-ulcer composition containing them Pharmaceutical compositions containing 3,3a,6,6a-tetrahydrofuro[3,4-b]furan derivatives including canadensolide and 3-epi-dihydrocanadensolide. Novel 3,3a,6,6a-tetrahydrofuro[3,4-b]furan derivatives bearing a variety of substituents in the 3- and 6-positi...	06/28/1977
3998872	Preparation of unsaturated carbonyl compounds Unsaturated carbonyl compounds, and particularly ଱-substituted allylic carbonyl compounds as exemplified by 3-(1-methylallyl)-2,4-pentanedione are prepared by reacting a conjugated diolefinic compound with a compound possessing an active methylene g...	12/21/1976

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Class 560/203 - Preparing esters by alkylation or isomerization