Organic compounds -- part of the class 532-570 series inventions 03/06

20060069271 - Alpha crystalline form of strontium ranelate: P

20060069272 - Process for preparing 2,5-disubstituted 3-alkylthiophenes: The present invention relates to a process for preparing 2,5-disubstituted 3-alkyl-thiophenes and more particularly to a process for preparing them that comprises an acylation reaction in position 5 of 2-substituted 3-alkylthiophenes. This process does not need reagents which are difficult to handle and does not need anhydrous conditions or inert...

20060069273 - Process for producing 1-acetoxy-3-(substituded phenyl) propenes: e

20060058535 - Manufacture of ascorbic acid esters: A process for the isolation of substantially pure ascorbyl-6-fatty acid ester from the products obtained by the sulphuric acid-catalyzed esterification of ascorbic acid with fatty acids comprises extracting with diethyl ketone such reaction products from the mixture remaining after the esterification reaction, hydrolysing the sulphate ester by-products in the diethyl...

20060058536 - Lactone derivative and its manufacturing method: A novel lactone derivative that is expressed by the following structural formula (I)....

20060058537 - Method for the produciton of trioxane: The invention relates to a process for preparing trioxane from aqueous formaldehyde solutions in the presence of acidic catalysts. The reaction of the formaldehyde to give trioxane takes place in a reaction column equipped with a circulation evaporator, and the formaldehyde solution used as the starting solution is mixed with...

20060058538 - Method for producing an aliphatic dialdehyde monoacetal: The invention relates to a process for obtaining a pure aliphatic dialdehyde monoacetal by reaction of the corresponding aliphatic dialdehyde or a precursor of the corresponding aliphatic dialdehyde with one or more aliphatic mono- or polyhydric alcohols while distillatively removing water to obtain a reaction mixture which is separated distillatively,...

20060058539 - Returning an olefin which is not reacted during the oxidation of olefins: The invention relates to a method for continuously returning an olefin which has not been reacted with hydroperoxide in order to form oxiranes during the epoxidation of olefins. Said olefin is contained in the flow of waste gas which is produced during epoxidation. Said method is characterised by the following...

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...

20060052618 - Process for the manufacture of alpha-tocopheryl acetate: (IV) in the presence of a catalyst of the formula Mn+(R1SO3−)n, wherein Mn+ is a silver, copper, gallium, hafnium or rare earth metal cation, n is the valence of the cation Mn+, and R1 is fluorine, C1-8-perfluoroalkyl or perfluoroaryl, and, if required, cyclizing any 3-phytyl-2,5,6-trimethylhydroquinone-1-acetate or a double bond isomer...

20060047129 - Process for the preparation of z-5-carboxymethylene-1,3-dioxolan-4-ones: A process for preparing Z-5-carboxymethylene-1,3-dioxolan-4-ones is provided which includes the steps of reacting a bis-ketal or bis-acetal of tartaric acid with a potassium containing base to form the carboxymethylene-1,3-dioxolan-4-one. A process for preparing HIV integrase inhibitors employing the carboxymethylene-1,3-dioxolan-4-one inhibitor is also provided....

20060047130 - Olefin epoxidation process, a catalyst for use in the process, a carrier for use in preparing the catalyst, and a process for preparing the carrier: A process is provided for preparing a carrier which process comprises incorporating into the carrier at any stage of the carrier preparation a strength-enhancing additive. Also provided is the resultant carrier having incorporated therein a strength-enhancing additive and a catalyst comprising the carrier. Also provided is a process for the...