Well-Defined Highly Active Heterogeneous Catalyst System for the Coupling Reactions of Carbon Dioxide and Epoxides

2002 ◽  
Vol 205 (1) ◽  
pp. 226-229 ◽  
Author(s):  
Hoon Sik Kim ◽  
Jai Jun Kim ◽  
Hyeck Nam Kwon ◽  
Moon Jo Chung ◽  
Byung Gwon Lee ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Heterogeneous Catalyst ◽  
Catalyst System ◽  
Coupling Reactions ◽  
Highly Active

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.

A Highly Active Cobalt Catalyst System for Kumada Biaryl Cross-Coupling

Synlett ◽  
2018 ◽  
Vol 29 (09) ◽  
pp. 1199-1202 ◽  
Author(s):  
Wenqin Wu ◽  
Hung Duong
Keyword(s):  
Room Temperature ◽  
Cobalt Catalyst ◽  
Cross Coupling ◽  
Catalyst System ◽  
Coupling Reactions ◽  
Short Reaction Time ◽  
Cross Coupling Reactions ◽  
Highly Active ◽  
Aryl Bromides ◽  
Wide Range

A highly active cobalt catalyst system has been developed for the cross-coupling reactions of arylmagnesium reagents and aryl bromides. In the presence of 1 mol% CoCl2, 2 mol% IPr·HCl and 2 mol% NaO t Bu, a wide range of (hetero)biaryls are prepared in 51–99% yields at room temperature within a short reaction time.

Metal complexes bearing ONO ligands as highly active catalysts in carbon dioxide and epoxide coupling reactions

2021 ◽  
Vol 517 ◽  
pp. 120194
Author(s):  
Bianca K. Muñoz ◽  
Mónica Viciano ◽  
Cyril Godard ◽  
Sergio Castillón ◽  
Mónica García-Ruiz ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Metal Complexes ◽  
Coupling Reactions ◽  
Highly Active

A Novel and Effective Ni Complex Catalyst System for the Coupling Reactions of Carbon Dioxide and Epoxides.

ChemInform ◽  
2003 ◽  
Vol 34 (45) ◽  
Author(s):  
Fuwei Li ◽  
Chungu Xia ◽  
Liwen Xu ◽  
Wei Sun ◽  
Gexin Chen
Keyword(s):  
Carbon Dioxide ◽  
Catalyst System ◽  
Coupling Reactions ◽  
Complex Catalyst
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