Organic compounds -- part of the class 532-570 series inventions 07/06

20060167319 - Methods for the synthesis of unsaturated ketone intermediates useful for the synthesis of carotenoids: 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 of optically active carotenoids. Synthesis of optically active carotenoids, in one embodiment, may be accomplished...

20060167320 - Purification method of terephthal aldehyde: The present invention relates to a method for preparing high-purity terephthalaldehyde from terephthalaldehyde crystal containing impurities by recrystallization using an antisolvent. Low-purity terephthalaldehyde prepared by a conventional method, which contains a small amount of impurities, is dissolved in a solvent and recrystallized using water as antisolvent to obtain high-purity terephthalaldehyde....

20060167321 - Method for producing tetrahydrofurane copolymers: The present invention provides a process for one-stage preparation of polyoxyalkylene glycols by copolymerizing tetrahydrofuran and alpha,omega-diols in the presence of a heteropolyacid and of a hydrocarbon, which comprises distilling water in a mixture with this hydrocarbon out of the copolymerization....

20060167322 - Method for producing menthol: The present invention relates to a method for manufacturing menthol by catalytic hydration of compounds having the carbon network of menthane with at least one double bond and which are substituted in 3-position by oxygen and/or catalytic rearrangement of stereoisomers of the menthol in the presence of hydrogen and doped...

20060167323 - Two-stage method for producing butane diol with intermediated separation of succinic anhydride: a) introducing a gas stream of a C4-dicarboxylic acid or of a derivative thereof at from 200 to 300° C. and from 2 to 60 bar into a first reactor and catalytically hydrogenating it in the gas phase to a product which contains mainly optionally alkyl-substituted γ-butyrolactone; b) removing succinic...

20060161022 - Chiral ligands for application in asymmetric syntheses: The present invention relates to biarylbisphosphines and intermediates thereof. The scope of the invention further encompasses catalysts preparable from the biarylbisphosphines and their use in asymmetric syntheses....

20060161023 - Process for preparing aldehydes: Process for the hydroformylation of olefins by linkage of the input parameters prevailing in the hydroformylation reaction to the target parameters of a hydroformylation reaction, wherein the linkage is achieved by means of at least one synthetic neuronal network....

20060161024 - Hydride reduction of alpha, beta-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 is enantioselective, and proceeds with a variety of hydride donors, catalysts, and substrates....

20060161025 - Process for preparing alkanediols and alkanetriols having a vicinal diol group: n

20060161026 - Process for the preparation of alkylene glycols: A process for the production of alkylene glycol by hydrolysis of alkylene oxide with water is described wherein at least one reaction feed is first passed through a guard bed before entering a catalyst bed comprising hydrolysis catalyst....

20060161027 - Method of producing 1, 3-propanediol: An object of the present invention is to provide a method of purification of 1,3-propanediol which gives less colored polytrimethylene ether glycol. The invention relates to a method of producing 1,3-propanediol which includes subjecting crude 1,3-propanediol having a purity of 95% by weight or greater to a heat treatment in...

20060155150 - Methods for the synthesis of lutein: 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 of optically active carotenoids. Synthesis of optically active carotenoids, in one embodiment, may be accomplished...

20060155151 - Continuous process and system of producing polyether polyols: A continuous process and system for producing polyether polyols that allows for continuously adding an unreacted oxide to a loop reactor while adding at least one thermally deactivating catalyst capable of thermally deactivating prior to decomposition of polyether polyol which can allow for greater concentrations of unreacted oxides and/or a...

20060155152 - Equilibrium reaction and gas/liquid reaction in a loop reactor: The invention relates to a process for simultaneously performing two chemically successive reactions in a loop reactor, specifically reaction I) an optionally catalyzed equilibrium reaction between high-boiling liquid reactants, in which essentially one high boiler is formed as an intermediate and at least one low boiler as a by-product, and...

20060155153 - Methods for making(-)-menthol and oxygenated menthane compounds: Processes are described for the preparation of (−) menthol from 4R-(+)-menthene or from (+)-limonene, wherein the starting material is hydroxylated using a catalyst comprising at least on polypeptide to form trans-piperitol or trans-isopiperitenol, respectively, followed by hydrogenation to from (−)-menthol....

20060149101 - Process for preparing aldol derivatives from alkenes using catalyst: The present invention provides a novel eco-friendly multi-functional catalyst system useful to obtain C2(n+1) aldol-derivative from Cn-alkenes where n ranges from 2 to 10 in a single step under hydroformylation reaction conditions and adol formation conditions....