Highly Efficient and Simple Catalytic System for the N-Arylation of Some Hindered Aza-Heterocycles in Water
作者:Chhanda Mukhopadhyay、Pradip Kumar Tapaswi
DOI:10.1080/00397911.2011.555219
日期:2012.8.1
Abstract A highly efficient and simple protocol for the N-arylation of some hindered aza-heterocycles in water has been developed with readily available basic copper carbonate as the catalyst using bis(3,5-dimethyl-1H-pyrazol-1-yl)methane as ligand. This mild catalyticsystem possesses excellent tolerance for a large variety of functional groups. A total of 11 previously unknown coupling products have
Ligands for Metals and Improved Metal-Catalyzed Processes Based Thereon
申请人:Buchwald L. Stephen
公开号:US20080033171A1
公开(公告)日:2008-02-07
One aspect of the present invention relates to novel ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.