Vyboishchikov and Thiel[50]. It was found that the stereochemistry of the cyclo-olefin product was determined either during the metallacycle formation or cleavage. However, by changing the catalyst or the substrate, the precise pathway can be changed but the overall reaction mechanism remains ...
关闭预览 想预览更多内容,点击免费在线预览全文 免费在线预览全文 期刊论文,完美PDF格式,可在线免费浏览全文和下载,支持复制编辑,,也可为要代写发表论文提供参考!!! 第26卷 第6期 分 子 催 化 Vol.26,No.6 2012年12月 JOURNALOFMOLECULARCATALYSIS(CHINA) Dec. 2012 文章编号:1001 3555(2012)06 0566 10 ...
Mechanism of InitiationMonto Carlo SimulationHoveyda–Grubbs CatalystOlefin metathesis is a type of chemical reaction with a wide range of applications. Despite intense study, the mechanism of this reaction and the effects of solvent are still poorly understood. The full RCM catalytic cycle of N-...
Underlying the development and improvement in these catalysts has been a detailed understanding of their mechanism of reaction. Continuing efforts are being made to further improve and broaden the use of these catalysts. These studies involve ligand and new transition metal complex synthesis as well ...
Schrock and Yves Chauvin, won the Nobel Prize for Chemistry in 2005 for developing metathesis, an important type of chemical reaction used in organic chemistry. Schrock and Grubbs were honoured for their advances in more-effective catalysts based on a mechanism first proposed by Chauvin. Grubbs ...
Grubbs–Hoveyda catalystmechanismkinetic parametersIn this work, typical alkenes and Grubbs–Hoveyda catalyst (Cat1) were selected to study the mechanism and kinetic parameters (the entropies, enthalpies, free energies, and rate constants) for the initiation reaction of Cat1 through employing the ...
Grubbs-Hoveyda catalystmechanismkinetic parametersIn this work, typical alkenes and Grubbs-Hoveyda catalyst (Cat1) were selected to study the mechanism and kinetic parameters (the entropies, enthalpies, free energies, and rate constants) for the initiation reaction of Cat1 through employing the ...
In particular, an on-line microreactor method was applied with ESI-MS/MS to profile the change and relationship of various Ru-intermediates by controlling the reaction within the first 30s of its time scale. The main fast decomposition mechanism of Ru-catalyst 1 in the presence of CH3CN was ...
vanderWesthuizenH.J.RoodtA.MeijboomR.ingentaconnectPolyhedron Oxford
The usually accepted dissociative mechanism for the alkene metathesis has been explored for alkynes, and compared with an associative pathway involving initial coordination of the alkyne to the 16-electron catalyst. Our results show that an associative mechanism would be the preferred pathway for the ...