专利号:US-12410140-B2 优先权日:2020-06-19 标题:Method for synthesis of roxadustat and intermediate thereof, and intermediate thereof 发明人:ZHANG YONG; WANG GUO; YANG FEI; LIU FENGWEI; ZHOU CHUNDONG; ZHANG ZITONG 权利人:JUMPCAN SHANGHAI MEDICAL TECH CO LTD 摘要:Disclosed are a method for the synthesis of roxadustat and an intermediate thereof, and an intermediate thereof. In particular, disclosed is a method for the synthesis of compound M1, the method comprising the following steps: carrying out a reaction as shown below between compound SM and compound SM-A under the action of an oxidizing agent. The method of the present invention uses cheap and easily available raw materials, has short reaction steps, produces a high yield, has simple and convenient post-treatment procedures, and is suitable for industrial production.
专利号:US-9969823-B1 优先权日:2011-09-01 标题 :Synthesis and polymerization of vinyl triazolium ionic liquids 发明人:LUEBKE DAVID; NULWALA HUNAID; MATYJASZEWSKI KRZYSZTOF; ADZIMA BRIAN 权利人:US ENERGY; THE US DEPARTMENT OF ENERGY 摘要:Herein, we describe polymerized ionic liquids, demonstrate the synthesis of polymerized ionic liquids, and demonstrate the polymerization of triazolium monomers. One embodiment shows the polymeriazation of the triazolium monomers with bis(trifluoromethanesulfonyl)imide anions. In another embodiment we show the feasibility of copolymerizing with commodity monomers such as styrene using free radical polymerization techniques.
专利号:WO-9714703-A1 优先权日:1995-10-16 标 题:Synthesis of polymerisable phosphodiesters 发明人:DRIVER MICHAEL JOHN; RUSSEL JEREMY COLIN; BROWNE JUDITH ELIZABETH; SAMMES PETER G 权利人:BIOCOMPATIBLES LTD; DRIVER MICHAEL JOHN; RUSSEL JEREMY COLIN; BROWNE JUDITH ELIZABETH; SAMMES PETER G 摘要:A mono- or di-functional phosphoramidite phosphitylating agent is used to phosphitylate an ethylenically unsaturated alcohol. The product may be oxidised to form the corresponding phosphate ester which may be reacted in further steps to form phosphoryl choline derivatives. The process is of value in the synthesis of 2-(Methacryloyloxyethyl)-2'-(trimethylammoniumethyl)phosphate, inner salt. It has the advantage over prior art processes in that the starting materials and intermediates are more stable and consequently easier to handle.
专利号:US-9079824-B2 优先权日:2010-07-06 标 题:Method for the synthesis of an amino acetal 发明人:LOH TECK PENG; TIAN JIESHENG 权利人:LOH TECK PENG; TIAN JIESHENG; UNIV NANYANG TECH 摘要:The present invention relates to a method for the synthesis of an α amino acetal, comprising (i) oxidizing a tertiary amine in the presence of a copper catalyst, at least one oxidant and a solvent, or (ii) reacting a secondary amine and an aliphatic aldehyde in the presence of a copper catalyst, at least one oxidant and a solvent.
专利号:US-9394394-B2 优先权日:2013-09-30 标题:Synthesis of chlorotrifluoroethylene-based block copolymers by iodine transfer polymerization 发明人:THENAPPAN ALAGAPPAN; AMEDURI BRUNO; LOPEZ GERALD 权利人:HONEYWELL INT INC 摘要:Methods for the synthesis of CTFE-based block copolymers through iodine transfer polymerization are disclosed. In an exemplary embodiment, a method includes reacting a fluoromonomer “Mâ€? with a chain transfer agent of the formula X—Y or Y—X—Y, wherein X represents a C 1 -C 3 hydrocarbon, a C 1 -C 6 hydrofluorocarbon, C 1 -C 6 hydrochlorofluorocarbon, or C 1 -C 6 fluorocarbon and Y represents iodine or bromine, in the presence of a radical initiator, to form a macro-initiator of the formula: X-poly(M)-Y or Y-poly(M)-X-poly(M)-Y, wherein poly(M) represents a polymer of the fluoromonomer. The method further includes reacting the macro-initiator with chlorotrifluoroethylene (CTFE) in the presence of a radical initiator to form a diblock or a triblock CTFE-based block copolymer of the formula: X-poly(M)-block-poly(CTFE) or PCTFE-block-poly(M)-X-poly(M)-block-PCTFE.
专利号:US-RE48674-E 优先权日:2010-07-07 标题 :Method for the synthesis of 5-amino-1-phenyl-3-cyano-4-trifluoromethyl sulfinyl 发明人:PASTORIO ANDREA; BETTI PAOLO 权利人:PASTORIO ANDREA; BETTI PAOLO; FINCHIMICA SRL 摘要:The present invention relates to a method for the preparation of the 5-amino-1-phenyl-3-cyano-4-trifluoromethyl sulfinyl pyrazole having the described general formula (I), particularly preferred for the synthesis of Fipronil I, through oxidation of a compound having the general formula (II) as follows:wherein R1 and R2 are independently hydrogen or halogen, and wherein the oxidizing agent is dichloroperacetic acid.