Biphasic Suzuki Coupling Reactions of Aryl or Benzyl Bromides Employing Cobalt-Containing Phosphine Ligand Coordinated Palladium Complex.

ChemInform ◽  
2005 ◽  
Vol 36 (32) ◽  
Author(s):  
Chin-Pei Chang ◽  
Yi-Luen Huang ◽  
Fung-E Hong
Keyword(s):  
Palladium Complex ◽  
Suzuki Coupling ◽  
Phosphine Ligand ◽  
Coupling Reactions

A Graphene Oxide Nanosheet Supported NHC–Palladium Complex as a Highly Efficient and Recyclable Suzuki Coupling Catalyst

Synthesis ◽  
2019 ◽  
Vol 51 (11) ◽  
pp. 2287-2292 ◽  
Author(s):  
Yingjie Qian ◽  
Jaeil So ◽  
Sang-Yung Jung ◽  
Sosan Hwang ◽  
Myung-Jong Jin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Heterogeneous Catalyst ◽  
Photoelectron Spectroscopy ◽  
Palladium Complex ◽  
Reaction Times ◽  
Suzuki Coupling ◽  
Coupling Reactions ◽  
X Ray ◽  
Highly Active ◽  
Planar Network

A practical heterogeneous catalyst was prepared by anchoring a triazine-tethered N-heterocyclic carbene (NHC)–palladium complex on the surface of graphene oxide (GO) nanosheets. The immobilized complex was characterized by X-ray photoelectron spectroscopy, field-emission transmission electron microscopy, energy-dispersive X-ray spectroscopy, and surface area analysis. It proved to be a highly active and durable heterogeneous catalyst for Suzuki coupling reactions. At room temperature, the use of this catalyst enabled the preparation of various biaryls and heterobiaryls in short reaction times. The catalytic system could be recycled at least 10 times with almost consistent activity. The results reveal that the stable palladium complex is strongly anchored on the surface of GO nanosheets. Interestingly, an open planar network of the GO nanosheet support plays a role during the catalytic process in enhancing the catalytic activity.

scholarly journals Aminophosphine complex as a catalyst precursor in Suzuki coupling reactions

2008 ◽  
Vol 6 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Dongbin Zhao ◽  
Zhaofu Fei ◽  
Wee Ang
Keyword(s):  
Palladium Nanoparticles ◽  
Palladium Complex ◽  
Suzuki Coupling ◽  
Catalyst Precursor ◽  
Coupling Reactions ◽  
Reaction Media

AbstractA palladium complex with an aminophosphine ligand has been prepared and investigated as a catalyst precursor in Suzuki coupling reactions in toluene. Nanoparticles composed of elemental palladium have been isolated from the reaction media and analyzed using transmission electroscopic microscope (TEM), which shows the essential catalysts palladium nanoparticles to have a size of ca. 3.0 nm.

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