CAS: 1700-10-3; 1,3-Cyclooctadiene

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CAS号79643-79-1 1-Trimethylsily... | CAS号79643-80-4 1-trimethylsily... | CAS号67-56-1 甲醇

📜1,5-Cis,Cis-Cyclooctadiene置于sodium Tetrahydroborate,三苯基膦体系中,用 四氢呋喃 用作溶剂,化学反应 2.0H,以78%的收率获得环辛二烯
参考文献:Cocl 2 / Ph 3 P / Nabh 4体系催化的烯烃异构化
标题:Cocl 2 / Ph 3 P / Nabh 4体系催化的烯烃异构化
摘要:在-10oc下使用cocl 2 / Ph 3 P / Nabh 4在thf中以1/3/1的比例原位产生的催化剂将1-癸烯异构化成主要为顺-2-癸烯或反式-2-癸烯.烯丙基苯和黄樟脑已经转化为相应的β-甲基苯乙烯.该催化剂还将顺式,顺式-1,5-环辛二烯异构化为顺式,顺式-1,3-环辛二烯.
Doi:10.1016/0022-328X(87)80353-4

专利信息

专利号:US-6504041-B2
优先权日:1996-11-15
标题 :Synthesis of ruthenium or osmium metathesis catalysts
发明人：GRUBBS ROBERT H; BELDERRAIN TOMAS R; BROWN SETH N; WILHELM THOMAS E
权利人:CALIFORNIA INST OF TECHN
摘要:The present invention relates to the synthesis of highly active ruthenium and osmium carbene metathesis catalyst in good yield from readily available starting materials. The catalysts that may be synthesized are of the general formula n wherein: n M is ruthenium or osmium; n X and X 1 are independently any anionic ligand; n L and L 1 are any neutral electron donor ligand; and, n R and R 1 are each hydrogen or one of the following substituent groups: C 2 -C 20 alkenyl, C 2 -C 20 alkynyl, C 1 -C 20 alkyl, 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. Optionally, the substituent group may be substituted with one or more groups selected from C 1 -C 5 alkyl, halogen, C 1 -C 5 alkoxy, and aryl. When the substitute aryl group is phenyl, it may be further substituted with one or more groups selected from a halogen, a C 1 -C 5 alkyl, or a C 1 -C 5 alkoxy. Specific synthetic protocols for vinyl alkylidene catalysts wherein R is hydrogen and R 1 is —CHCR 12 R 13 and non-vinyl alkylidene catalysts are also disclosed. In addition to the ease of synthesis (typically a one-step synthesis), the reactions generally may be run at or above room temperature and the resulting products usually may be used without extensive post synthesis purification.

专利号:US-9568462-B2
优先权日:2006-09-29
标 题:Methods and instrumentation for during-synthesis monitoring of polymer functional evolution
发明人：REED WAYNE F
权利人:THE ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND
摘要:A method of monitoring the evolution of polymer and/or colloid stimuli responsiveness during synthesis of polymers and/or colloids, including postpolymerization modifications on natural and synthetic polymers, includes providing a reactor in which the polymers and/or colloids are synthesized; and providing a means of monitoring the stimuli responsiveness of the polymers and/or colloids during said synthesis. Preferably, the method also includes monitoring the evolution of the characteristics of the polymers and/or colloids during said synthesis. Preferably, evolution of polymer and/or colloid stimuli responsiveness is correlated to the evolution of the properties of the polymers and/or colloids themselves. Also, preferably the conditions of the fluid in the reactor in which the synthesis occurs is determined. The determination can be by detection, choice of materials and temperature conditions, for example, and combinations thereof. The method and instrumentation disclosed can lead to optimization and control of processes and synthetic and modification strategies leading to polymers and colloids with desired stimuli responsiveness.

专利号:US-2016031800-A1
优先权日:2013-03-14
标 题:Synthesis of chiral kynurenine compounds and intermediates
发明人：TRETYAKOV ALEXANDER; DROUET KEITH E; SANDERS WILLIAM
权利人:VISTAGEN THERAPEUTICS INC
摘要:Provided are methods for the synthesis of compounds including chiral kynurenine compounds, intermediates useful for the synthesis thereof, and related compounds. For example, methods are provided for the synthesis of L-4-chlorokynurenine.

专利号:US-2022219156-A1
优先权日:2019-04-29
标题:Catalyst for the catalytic synthesis of urea
发明人：GLOTZBACH CHRISTOPH; TENHUMBERG NILS; EL HAWARY TAREK; MAKHYNYA YEVGENY; LEITNER WALTER; KLANKERMAYER JÃœRGEN; SCHUMACHER HANNAH
权利人:THYSSENKRUPP IND SOLUTIONS AG; THYSSENKRUPP AG
摘要:A ruthenium-phosphine complex can be used as a catalyst in a method for the catalytic synthesis of urea. The method may comprise more particularly a reaction of formamide or of formamide with ammonia in the presence of the catalyst to form urea and hydrogen. Through the use of the ruthenium-phosphine complex as the catalyst, catalytic preparation of urea from formamide or from formamide with ammonia is provided for the first time. This allows for synthesis under mild conditions and virtually no formation of byproducts. Further, using an acid as a cocatalyst in the catalytic synthesis or the reaction can lead to an improvement in urea yield.

专利号:US-4749806-A
优先权日:1984-12-28
标题:Process for the synthesis of isocyanates and of isocyanate derivatives
发明人：TKATCHENKO IGOR; JAOUHARI RABIH; BONNET MICHEL; DAWKINS GORDON; LECOLIER SERGE
权利人:POUDRES & EXPLOSIFS STE NALE
摘要:The present invention relates to a process for the synthesis of isocyanates and of isocyanate derivatives. Isocyanates are obtained by reacting an organic halide with a metal cyanate in an organic medium in the presence of a catalyst consisting of a complex of nickel with at least one organic ligand, in which complex the nickel is in the zero oxidation state. A carbamate or a urea, respectively, are obtained by a subsequent reaction with a hydroxy compound or a primary or secondary amine. Isocyanates and their derivatives are used especially either as refined synthesis agents for the production of pesticides and medications, or as monomers or comonomers for the preparation of many macromolecular compounds.

专利号:US-2025023061-A1
优先权日:2021-11-17
标题 :Method for the synthesis of a metal catalyst surrounded with a carbon matrix
发明人：CHATENET MARIAN; DOAN HUONG; SGARBI RICARDO
权利人:INST POLYTECHNIQUE GRENOBLE; UNIV GRENOBLE ALPES; CENTRE NAT RECH SCIENT; UNIV SAVOIE MONT BLANC
摘要:A method for a synthesis of a metal catalyst, including providing at least one metal complex including a metal ion and a non-chelating complexing agent having carbon, the complex having a decomposition temperature, and performing a pyrolysis of the complex at a temperature greater than or equal to a decomposition temperature of the complex, whereby inducing a formation of nanoparticles surrounded by a carbon matrix to form the catalyst. Thanks to the carbon matrix, the catalysts provided herein can be corrosion resistant, self-healing, more cost-effective, and can have higher catalytic activity. The synthesis of the catalyst and its properties can furthermore be improved compared to catalysts formed from a complex including a chelating.