Rh(III)-Catalyzed Olefination of N-Sulfonyl Imines: Synthesis of Ortho-Olefinated Benzaldehydes
摘要:
Rh(III)-catalyzed olefination of N-sulfonyl imines using acrylates and styrenes has been achieved for the synthesis of ortho-olefinated benaldehydes. This reaction proceeds via a chelation assisted C-H olefination/in situ hydrolysis process.
Palladium salt and functional reduced graphene oxide complex: in situ preparation of a generally applicable catalyst for C–C coupling reactions
作者:Sheng Wang、Donghua Hu、Wenwen Hua、Jiangjiang Gu、Qiuhong Zhang、Xudong Jia、Kai Xi
DOI:10.1039/c5ra10585d
日期:——
A novel Pd catalyst was designed by affording Pd2+ salt on the surface of functional reduced graphene oxide (FRGO), providing a new cheap and stable in situ prepared palladiumcatalyst for C–C coupling reactions, including the Heck reaction, Suzuki reaction, C–H bond functionalization reactions of thiophenes, and terminal alkyne C–H activation and homocoupling.
Easy-separable magnetic nanoparticle-supported Pd catalysts: Kinetics, stability and catalyst re-use
作者:Urszula Laska、Christopher G. Frost、Gareth J. Price、Pawel K. Plucinski
DOI:10.1016/j.jcat.2009.10.001
日期:2009.12.10
novel palladium-based catalysts supported on magnetic nanoparticles with diameters of 7–17 nm have been prepared and evaluated in C–C coupling, hydrogenation and amination reactions. One type of catalyst used palladium complexes containing phosphine and/or acetate ligands for applications in Suzuki and Heck reactions. The second type consisted of Pd(0)-functionalised magnetic cores for use in hydrogenation
Rhodium(III)-Catalyzed Oxidative CH Functionalization of Azomethine Ylides
作者:Wencui Zhen、Fen Wang、Miao Zhao、Zhengyin Du、Xingwei Li
DOI:10.1002/anie.201207204
日期:2012.11.19
Put it on a ring: A rhodium(III) complex can catalyze the oxidative coupling of azomethine imines with olefins, leading to the synthesis of 1,2‐dihydrophthalazines, olefinated aldehydes, or fused pyridines, depending on the conditions used.
Ionic Pd/NHC Catalytic System Enables Recoverable Homogeneous Catalysis: Mechanistic Study and Application in the Mizoroki–Heck Reaction
作者:Dmitry B. Eremin、Ekaterina A. Denisova、Alexander Yu. Kostyukovich、Jonathan Martens、Giel Berden、Jos Oomens、Victor N. Khrustalev、Victor M. Chernyshev、Valentine P. Ananikov
DOI:10.1002/chem.201903221
日期:2019.12.20
concentrations. The present study reveals a dynamic stabilization mechanism with labile metal-NHC binding and [PdX3 ]- [NHC-R]+ ion pair formation. Access to reactive anionic palladium intermediates formed by dissociation of the NHC ligands and plausible stabilization of the molecular catalyst in solution by interaction with the [NHC-R]+ azolium ion is of particular importance for an efficient and recyclable catalyst
Catalytic Performance Studies of New Pd and Pt Schiff Base Complexes Covalently Immobilized on Magnetite Nanoparticles as the Environmentally Friendly and Magnetically Recoverable Nanocatalyst in C–C Cross Coupling Reactions
作者:G. Rezaei、A. Naghipour、A. Fakhri
DOI:10.1007/s10562-017-2270-7
日期:2018.2
Synthesis and characterization of new magnetically recoverable and high-performance nanocatalysts of Pd and Pt Schiff base complexes on magnetite nanoparticles were considered. Catalytic activity of these nanocatalysts was explored in Suzuki and Heckcrosscouplingreactions. The catalysts can be easily reused fourth consecutive runs without significant loss of catalytic efficiency.Graphical Abstract