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.
Herein, we report a catalyst system for Pd-catalyzed decarbonylative Suzuki–Miyauracross-coupling of aroyl chlorides with boronic acids to furnish biaryls. This strategy is suitable for a broad range of common aroyl chlorides and boronic acids. The synthetic utility is highlighted in the direct late-stage functionalization of pharmaceuticals and natural products capitalizing on the presence of carboxylic
Palladium Membrane-Installed Microchannel Devices for Instantaneous Suzuki-Miyaura Cross-Coupling
作者:Yoichi M. A. Yamada、Toshihiro Watanabe、Tomohiko Beppu、Naoshi Fukuyama、Kaoru Torii、Yasuhiro Uozumi
DOI:10.1002/chem.201000511
日期:——
Instantaneous catalytic carbon–carbon bond‐forming reactions were achieved in catalytic membrane‐installed microchanneldevices that have a polymeric palladium‐complex membrane. The catalytic membrane‐installed microchanneldevices were provided inside the microchannels by means of coordinative and ionic molecular convolution at the interface between the organic and aqueous phases flowing laminarly
Poly(o-aminothiophenol)-stabilized Pd nanoparticles as efficient heterogenous catalysts for Suzuki cross-coupling reactions
作者:Yuan Chen、Minggui Wang、Long Zhang、Yan Liu、Jie Han
DOI:10.1039/c7ra09947a
日期:——
surfactant. The redox reaction between o-aminothiophenol and Pd(NO3)2 leads to the simultaneous formation of a PATP polymer and Pd nanoparticles. The PATP-stabilized Pd nanoparticles have been characterized by TEM, FTIR, XRD, ICP-MS and XPS. Catalytic results showed that PATP-stabilized Pd nanoparticles were highly stable and active catalysts for Suzukicross-couplingreactions, where high yields could
Rapid “Mix-and-Stir” Preparation of Well-Defined Palladium on Carbon Catalysts for Efficient Practical Use
作者:Sergey A. Yakukhnov、Evgeniy O. Pentsak、Konstantin I. Galkin、Roman M. Mironenko、Vladimir A. Drozdov、Vladimir A. Likholobov、Valentine P. Ananikov
DOI:10.1002/cctc.201700738
日期:2018.4.24
A facile direct deposition approach for the preparation of recyclable Pd/C catalysts simply by stirring a solution of tris(dibenzylideneacetone)dipalladium(0) with a suitable carbon material was evaluated. An extraordinarily rapid catalyst preparation procedure (<5 min) under mild conditions and its excellent performance in cross‐coupling and hydrogenation reactions were demonstrated. The key point
评价了一种简单的直接沉积方法,该方法用于简单地通过搅拌三(二亚苄基丙酮)二钯(0)与合适的碳材料的溶液来制备可回收的Pd / C催化剂。证明了在温和条件下非常快速的催化剂制备程序(<5分钟)及其在交叉偶联和加氢反应中的优异性能。催化剂设计的关键是将Pd 0中心直接沉积在高度可及的表面积上,避免出现不确定的Pd II / Pd 0状态。