CAS: 140-88-5; Ethyl Acrylate

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CAS号106-98-9 正丁烯 | CAS号103-36-6 肉桂酸乙酯 | CAS号54509-73-8 ethene | CAS号79-10-7 丙烯酸 | CAS号50-00-0 甲醛 | CAS号867-13-0 磷酰基乙酸三乙酯 | CAS号539-74-2 3-溴丙酸乙酯 | CAS号623-72-3 3-羟基丙酸乙酯 | CAS号2985-28-6 Propanoic acid,... | CAS号15484-46-5 2-(羟甲基)丙烯酸甲酯 | CAS号109669-53-6 methyl 2-(2-met... | CAS号109900-69-8 ethyl 4-(2-etho... | CAS号109976-58-1 ethyl 7-methylo... | CAS号101466-85-7 3-(4-(三氟甲基)苯基)丙烯酸乙酯 | CAS号948-03-8 1-羟基-2-萘甲酸甲酯 | CAS号376641-48-4 (E)-3-(2-(三氟甲基)... | CAS号10138-32-6 5-降冰片烯-2-羧酸乙酯 | CAS号104830-07-1 3-(4-氨基吡啶-3-基)丙烯酸乙酯

专利信息

专利号:US-6794534-B2
优先权日:2000-06-23
标题:Synthesis of functionalized and unfunctionalized olefins via cross and ring-closing metathesis
发明人：GRUBBS ROBERT H; CHATTERJEE ARNAB K; MORGAN JOHN P; SCHOLL MATTHIAS; CHOI TAE-LIM
权利人:CALIFORNIA INST OF TECHN
摘要:The invention is directed to the cross-metathesis and ring-closing metathesis reactions between geminal disubstituted olefins and terminal olefins, wherein the reaction employs a Ruthenium or Osmium metal carbene complex. Specifically, the invention relates to the synthesis of α-functionalized or unfunctionalized olefins via intermolecular cross-metathesis and intramolecular ring-closing metathesis using a ruthenium alkylidene complex. The catalysts preferably used in the invention are of the general formula n wherein: n M is ruthenium or osmium; n X and X 1 are each independently an anionic ligand; n L is a neutral electron donor ligand; and, n R, R 1 R 6 , R 7 , R 8 , and R 9 are each independently hydrogen or a substituent selected from the group consisting of C 1 -C 20 alkyl, C 2 -C 20 alkenyl, C 2 -C 20 alkynyl, aryl, C 1 -C 20 carboxylate, C 1 -C 20 alkoxy, C 2 -C 20 alkenyloxy, C 2 -C 20 alkynyloxy, aryloxy, C 2 -C 20 alkoxycarbonyl, C 1 -C 20 alkylthio, C 1 -C 20 alkylsulfonyl and C 1 -C 20 alkylsulfinyl.

专利号:WO-0206209-A1
优先权日:2000-07-19
标 题 :Synthesis method for n1,n3-bis (2.aminoethyl) propane-1,3-diamine, synthesis intermediates, resulting products and use thereof in synthesis of cyclam
发明人：HANDEL HENRI; BERNARD HELENE; ANTOINE MARINE
权利人:UNIV BRETAGNE OCCIDENTALE; HANDEL HENRI; BERNARD HELENE; ANTOINE MARINE
摘要:The invention concerns a method of synthesis of a linear polynitrogen-containing derivative, namely N1,N3-bis (2-aminoethyl) propane-1,3-diamine of general formula (I) using as synthesis intermediates compounds (II) and (III). The invention also concerns the resulting products and their use in the synthesis of cyclic polynitrogen-containing derivatives such as cyclam.

专利号:US-2022267266-A1
优先权日:2019-07-09
标 题 :Improved, cost effective process for synthesis of vitamin d3 and its analogue calcifediol from ergosterol
发明人：DATLA ANUPAMA; NAGRE PRASHANT; TAMORE JAGDISH; PRABHU MANOJKUMAR SADANAND; KADAM SACHIN VASANT
权利人:FERMENTA BIOTECH LTD
摘要:Disclosed herein is an improved and efficient process for synthesis of vitamin D3 and its analogue Calcifediol from Ergosterol. Particularly, the present invention discloses the synthesis of key intermediate 3β-tert-Butyldimethylsilyloxy-22-hydroxy-23,24-bisnorchola-5,7-diene (5), and novel intermediate β-tert-Butyldimethylsilyloxy-22-iodo-23,24-bisnorchola-5,7-diene (9) by a simple and cost effective process. The industrially viable processes for preparation of said intermediate(s) results in providing provitamins with various side chains and the desired products in high yield.

专利号:WO-2010078250-A1
优先权日:2008-12-30
标 题:Synthesis of (2-amino)-tetrahydrocarbazole-propanoic acid
发明人：WEI YUAN; Li tianqiao; CHI YONGXIANG; ZHU JINGYANG
权利人:CHIRAL QUEST INC; WEI YUAN; Li tianqiao; CHI YONGXIANG; ZHU JINGYANG
摘要:The present invention provides a new approach to the synthesis of 2-amino-tetrahydrocarbazole-propanoic acid, a key intermediate for the synthesis of Ramatroban. More specifically, a synthesis of 2-amino-tetrahydrocarbazole- propanoic acid which includes oxidizing an aminocyclohexanol to form an aminocyclohexanone, condensing the aminocyclohexanone to form a tetrahydrocarbazole, deprotecting the tetrahydrocarbazole to yield a racemic mixture of a tetrahydrocarbazole, resolving the racemic mixture to obtain a yield mixture with an enantiomeric excess of one enantiomer over another, alkylating the excess enantiomer to yield an alkyl ester, and hydrolyzing the alkyl ester to yield 2-amino-tetrahydrocarbazole-propanoic acid.

专利号:US-2021130543-A1
优先权日:2019-10-30
标 题:Synthesis of cyanurate and multifunctional alcohol-based polyether acrylate for uv curable materials
发明人：YUAN ZHONGSHUN; XU CHUNBAO; WU WEI
权利人:YUAN ZHONGSHUN; XU CHUNBAO; WU WEI
摘要:Polyether (meth)acrylates based on cyanuric acid or substituted cyanuric acid and multifunctional alcohol, which optionally include triethanolamine units, have wide applications in UV curable adhesives, coatings, inks, sealants, paints or 3D printing. These polyether acrylates have rigid cyanurate structure endowing the material with extra strength and thermal stability. Furthermore, triethanolamine unit, when present, endows the material with anti-oxygen inhibition property in UV curing process. These polyether (meth)acrylates have low viscosity and high reactivity towards UV curing. The cured resins have high resilience and strength. The process of making the polyether (meth)acrylates includes the synthesis of trifunctional polyether polyols through controlled polymerization of propylene oxide using multifunctional alcohol (such as glycerol and sucrose), cyanuric acid or substituted cyanuric acid, and optionally triethanolamine, in the presence of a catalyst, followed by the synthesis of polyether (meth)acrylates through transesterification or through direct esterification of the trifunctional polyether polyols.

专利号:US-6512081-B1
优先权日:1997-07-21
标题:Synthesis of dithioester chain transfer agents and use of bis(thioacyl) disulfides or dithioesters as chain transfer agents
发明人：RIZZARDO ENZIO; THANG SAN HOA; MOAD GRAEME
权利人:E I DUPONT NEMOURS AND COMPANY; COMMW SCIENT IND RES ORG
摘要:This invention relates to the synthesis of dithiocarboxylic acid esters by reaction of bis(thioacyl) disulphides, thioacetals or vinylidane bis(thioether) with free-radicals (optionally in the presence of monomers). The invention also relates to processes for the synthesis of polymers utilising these dithioesters as polymerisation regulators (chain transfer agents) or to the use of bis(thioacyl) disulphides to generate dithioester chain transfer agents in situ.