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Organic Compounds -- Part Of The Class 532-570 Series > Azo Compounds Containing Formaldehyde Reaction Product As The Coupling Component > Carbohydrates Or Derivatives > Oxygen Containing Hetero Ring (e.g., Dioxirane, Etc.) > Lactones (i.e., -c(=x)o-, Wherein X Is Chalcogen, Is Part Of The Hetero Ring) > The Lactone Ring Is Five-membered > Preparing From Compound Containing -coo- Group Preparing From Compound Containing -coo- GroupPreparing From Compound Containing -coo- Group patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.05/11/06 - 20060100450 - Process for the production of y-methyl-a-methylene-y-butyrolactone from reaction of levulinic acid and hydrogen followed by reaction of crude y-valerolactone and formaldehyde, both reactions being carried out in the supercritical or near-critical fluid ph Process for the production of γ-methyl-α-methylene-γ-butyrolactone from reaction of levulinic acid and hydrogen followed by reaction of crude γ-valerolactone and formaldehyde, both reactions being carried out in the supercritical or near-critical fluid phase. ... 05/11/06 - 20060100449 - Integrated two-step process for the production of gamma-methyl-alpha-methylene-gamma-butyrolactone from levulinic acid and hydrogen An integrated two step method for making gamma-methyl alpha-methylene-gamma-butyrolactone (meMBL) from levulinic acid, in which levulinic acid is reacted with hydrogen in the first step to form a crude reaction product containing gamma-valerolactone, and the crude reaction product, without removal of unreacted levulinic acid therefrom, is reacted with formaldehyde in ... 03/09/06 - 20060052617 - Continuous process for the production of optically pure (s)-beta-hydroxy-y-butyrolactone Disclosed is a continuous process for the production of optically pure (S)-β-hydroxy-γ-butyrolactone having constantly maintained optical activity, consisting of hydrogenating 2-50 wt % of a substituted carboxylic acid derivative in a solvent using a fixed bed reactor filled with a precious metal catalyst-impregnated inorganic oxide carrier at 50-500° C. under ... 01/05/06 - 20060004212 - Catalysts for maleic acid hydrogenation to 1,4-butanediol This invention relates to a process for catalytically hydrogenating a hydrogenatable precursor in contact with a hydrogen-containing gas and a hydrogenation catalyst comprising one or more active hydrogenation catalyst components on a support comprising titanium dioxide in the rutile crystalline phase to produce 1,4-butanediol and, optionally, gamma-butyrolactone and/or tetrahydrofuran. ... 08/11/05 - 20050176972 - Catalytic hydrogenation over rhenium-containing catalysts supported on activated carbon In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as metal) in a weight ratio to ... ### FreshPatents.com Support |