专利号:US-8569560-B2 优先权日:2006-10-13 标题 :Synthesis of terminal alkenes from internal alkenes via olefin metathesis 发明人:SCHRODI YANN; PEDERSON RICHARD L; KAIDO HIROKI; TUPY MICHAEL J 权利人:ELEVANCE RENEWABLE SCIENCES 摘要:This disclosure relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by an olefin metathesis catalyst. According to one aspect, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting, in the presence of a ruthenium alkylidene metathesis catalyst, an olefinic substrate comprised of at least one internal olefin with a cross metathesis partner comprised of an alpha olefinic reactant, under reaction conditions effective to allow cross-metathesis to occur, wherein the reaction conditions include a reaction temperature of at least 35° C. The methods, compositions, reactions and reaction systems herein disclosed have utility in the fields of catalysis, organic synthesis, and industrial chemistry.
专利号:WO-2025188688-A8 优先权日:2024-03-04 标题 :Rapid synthesis of degradable polyols based on esters and thioethers for use in polyurethanes 发明人:Monroe Mary Beth; PETRYK NATALIE M 权利人:Monroe Mary Beth; PETRYK NATALIE M 摘要:A degradable polyurethane (PUr) having degradation rates useful for hemostatic dressings for controlling bleeding in traumatic wounds. Degradable PUrs may be synthesized from degradable monomers based on hydrolytically labile esters and oxidatively labile thioethers using rapid click-chemistry reactions. Monomers may include trimethylolpropane tris(3-mercaptopropionate) (TMPMP), dipentaerythritol hexakis(3-mercaptopropionate) (DPEHMP), dipentaerythritol hexakis(3-mercaptopropionate) (DPEHMP) or 2,2'-(ethylenedioxy) diethanethiol reacted with hydroxyethyl acrylate, 3-buten-1-ol, 3-methyl-3-buten-1-ol, or 3-buten-2-ol. Synthesis of these monomers is rapid and has no byproducts or toxic catalysts that require removal, enabling polyol synthesis and immediate use in further polymerization
专利号:US-7905943-B1 优先权日:2008-01-08 标 题 :Synthesis of hybrid inorganic nanoparticle structures using peptides 发明人:SLOCIK JOSEPH M; NAIK RAJESH R 权利人:US AIR FORCE 摘要:Bimetallic hybrid nanostructures exhibit enhanced properties beyond a single composition nanoparticle, but present technical challenges for synthesis that includes the ability to process two or more materials while offering control over structural arrangement. Unlike conventional synthetic strategies, biological systems are excellent manufacturers of complex inorganic materials which possess maximal functionality, quality, and structures. Using a bio-mediated approach, Applicants have developed a synthetic method for the controlled synthesis of bimetallic nanostructures using multifunctional peptides.
专利号:WO-03031376-A1 优先权日:2001-10-12 标 题 :Solid phase synthesis of substituted 1,5-benzodiazepine-2-one and 1,5-benzothiazepine-2-one 发明人:MORTON GEORGE C; SALVINO JOSEPH M; LABAUDINIERE RICHARD F; HERPIN TIMOTHY F 权利人:AVENTIS PHARMA INC; MORTON GEORGE C; SALVINO JOSEPH M; LABAUDINIERE RICHARD F; HERPIN TIMOTHY F 摘要:A solid phase synthetic method for making substituted 1,5-benzodiazepine-2-one or 1,5-benzothiazepine-2-one. The method is useful for synthesis of large numbers of compounds through automated parallel synthesis or combinatorial library generation and is thus important to rapid discovery or new therapeutic agents containing the base structure of 1,5-benzodiazepine-2-one or 1,5-benzothiazepine-2-one.
专利号:US-11912647-B2 优先权日:2020-05-22 标 题:Diversity-oriented synthesis of N,N,O-trisubstituted hydroxylamines from alcohols and amines by N—O bond formation 发明人:CRICH DAVID; HETTIKANKANAMALAGE ASIRI; HILL JARVIS 权利人:UNIV GEORGIA 摘要:In one aspect, the disclosure relates to a method for the direct synthesis of complex N,N,O-trisubstituted hydroxylamines by N—O bond formation. In another aspect, the method can successfully be employed using a wide variety of commercially available alcohols and secondary amines and enables the construction of large fragment-based libraries of trisubstituted hydroxylamines for drug discovery purposes. Also disclosed are N,N,O-trisubstituted hydroxylamines having low basicity, high stability at ambient temperatures, and an inherent lack of reactivity towards acetylating and sulfonylating enzymes that confer mutagenicity on less-substituted hydroxylamines.
专利号:WO-2016120890-A1 优先权日:2015-01-30 标题 :An enantioselective process for the synthesis of (2s,4r)-4-hydroxypipecolic acid 发明人:SURYAVANSHI GURUNATH; KAMBLE ROHIT BALKRISHNA 权利人:COUNCIL SCIENT IND RES 摘要:The present invention relates to an improved process for synthesis of 4-hydroxy pipecolic acid. The present invention relates to an improved enantioselective process for the synthesis of (2S,4R)-4-hydroxypipecolic acid via Co(III) (salen)-catalyzed two stereocentered Hydrolytic Kinetic Resolution (HKR) of racemic 1,3-azido epoxide with good yields and high optical purity without any protecting groups. 10 31
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