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-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.
专利号:US-6245937-B1 优先权日:1996-11-29 标题 :Liquid phase parallel synthesis of chemical libraries 发明人:CHENG SOAN; SAUNDERS JOHN 权利人:DUPONT PHARMACEUTICALS RES LAB 摘要:This invention features methods of biphasic synthesis for synthesizing combinatorial libraries and combinatorial libraries of chemical compounds utilizing the template, and combinatorial libraries of chemical compounds formed by the methods of this invention.
专利号:US-6608196-B2 优先权日:2001-05-03 标题 :Process for solid supported synthesis of pyruvate-derived compounds 发明人:WANG BING; JANAGANI SATYANARAYANA; CALLAWAY WYETH B; SESSLER JONATHAN L 权利人:GALILEO PHARMACEUTICALS INC 摘要:Provided are processes for synthesizing structurally diverse pyruvate-derived compounds using a parallel approach on a solid phase support. Examples of such a solid phase support include resins which have also been used in solid phase peptide synthesis.
专利号:US-10940467-B2 优先权日:2014-01-27 标 题 :Synthesis of molecular sieves having MWW framework structure 发明人:JOHNSON IVY D; HRYCENKO NADYA A 权利人:EXXONMOBIL CHEMICAL PATENTS INC 摘要:The present invention provides an improved method for making molecular sieves having MWW framework structure using precipitated aluminosilicates (PAS), and the use of molecular sieves so made in processes for catalytic conversion of hydrocarbon compounds.
专利号:US-7833926-B2 优先权日:2005-07-01 标题 :Arylphenoxy catalyst system for producing ethylene homopolymer or copolymers of ethylene and α-olefins 发明人:WOO TAE WOO; OK MYUNG AHN; HAHN JONG SOK; LEE MAL-OU; KANG SANG OOK; KO SUNG-BO; KIM TAE-JIN; KIM SUNG-KWAN 权利人:SK ENERGY CO LTD 摘要:The present invention relates to an arylphenoxy catalyst system producing an ethylene homopolymer or copolymers of ethylene and α-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and α-olefins having a high molecular weight under a high temperature solution polymerization condition using the same. The catalyst system includes a group IV arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst, a cyclopentadiene derivative and arylphenoxide as fixed ligands are located around the group IV transition metal, arylphenoxide is substituted with at least one aryl derivative and is located at the ortho position thereof, and the ligands are not crosslinked to each other. The catalyst includes an environmentally-friendly raw material, synthesis of the catalyst is economical, and thermal stability of the catalyst is excellent. It is useful for producing an ethylene homopolymer or copolymers of ethylene and α-olefins having various physical properties in commercial polymerization processes.
摘要:Park, K.; Jo, H., Science of Synthesis: Cross Coupling and Heck-Type Reactions, (2012) 1, 900. 摘要:Molander, G. A.; Ryu, D., Science of Synthesis: C-1 Building Blocks in Organic Synthesis, (2013) 2, 61. 摘要:Shirakawa, E., Science of Synthesis, (2021) , 150. 摘要:Patil, N. T.; Tathe, A. G.; Bhoyare, V. W., Science of Synthesis, (2019) , 118. 摘要:García-Garrido, S. E.; Presa Soto, A.; García-Álvarez, J., Science of Synthesis: Knowledge Updates, (2025) 2.