CAS: 25551-13-7; Trimethylbenzene

专利信息

专利号:US-10618855-B2
优先权日:2016-06-07
标题:Catalyst and method for synthesis of aromatic hydrocarbons through direct conversion of synthesis gas
发明人：PAN XIULIAN; YANG JUNHAO; JIAO FENG; ZHU YIFENG; BAO XINHE
权利人:DALIAN INST CHEM & PHYSICS CAS
摘要:Synthesis of aromatic hydrocarbons from synthesis gas in a fixed bed or a moving bed reactor loaded with a composite catalyst comprising Catalyst Component A and Catalyst Component B mixed via a mechanical mixing mode, wherein the active ingredient of the Catalyst Component A is active metal oxides; and the Catalyst Component B is one or both of ZSM-5 zeolite and metal modified ZSM-5; the pressure of the synthesis gas is 0.1-6 MPa; the reaction temperature is 300-600° C.; and the space velocity is 500-8000 h −1 . The reaction process has a high product yield and selectivity, with the selectivity of aromatics reaching 50-85%, while the selectivity of the methane byproduct is less than 15%.

专利号:US-2012215002-A1
优先权日:2009-10-09
标 题:Synthesis of optically active intermediate for the preparation of montelukast
发明人：LEFORT LAURENT
权利人:LEFORT LAURENT
摘要:The present invention relates to the synthesis of optically active alcohols by means of enantioselective hydrogenation of ketones in biphasic systems. In particular the present invention relates to the synthesis of an optically active alcohol of general formula (1).

专利号:US-2003162992-A1
优先权日:2001-12-14
标 题 :Preparation of intermediates useful in the synthesis of antiviral nucleosides
发明人：WATANABE KYOICHI A; DU JINFA
摘要:The present invention is an efficient process for the manufacture of α-acyloxyacetaldehyde, a key intermediate in the synthesis of 1,3-oxathiolane and 1,3-dioxolane nucleosides.

专利号:US-2007260076-A1
优先权日:2003-12-05
标 题:Practical, Cost-Effective Synthesis of Ubiquinones
发明人：LIPSHUTZ BRUCE H; BERL VOLKER; SHEIN KARIN; WETTERICH FRANK
权利人:LIPSHUTZ BRUCE H; BERL VOLKER; SHEIN KARIN; WETTERICH FRANK
摘要:The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention. The invention further provides an improved method for the carboalumination of alkyne substrates.

专利号:US-2006167289-A1
优先权日:2003-12-05
标题 :Practical, cost-effective synthesis of ubiquinones
发明人：LIPSHUTZ BRUCE H; BERL VOLKER; SCHEIN KARIN; WETTERICH FRANK
权利人:ZYMES LLC
摘要:The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention. The invention further provides an improved method for the carboalumination of alkyne substrates.

专利号:US-2015336866-A1
优先权日:2013-01-01
标题:Synthesis of difluoromethyl ethers and sulfides
发明人：HARTWIG JOHN; FIER PATRICK
权利人:UNIV CALIFORNIA
摘要:The synthesis of difluoromethyl ethers and sulfides with a simple, non-ozone-depleting reagent is described. The difluoromethylation of phenols with this reagent occurs at room temperature within minutes with exceptional functional group tolerance. The mild conditions makes possible tandem processes for the conversion of aryl boronic acids, aryl halides and arenes to difluoromethyl ethers. Mechanistic studies support a reaction pathway involving nucleophilic attack of the phenolate to difluorocarbene.