A highly efficient precatalyst for amination of aryl chlorides: synthesis, structure and application of a robust acenaphthoimidazolylidene palladium complex
Novel robust benzimidazolylidene palladium complexes: synthesis, structure, and catalytic applications in amination of chloroarenes
作者:Weiwei Fang、Jian Jiang、Yong Xu、Juefei Zhou、Tao Tu
DOI:10.1016/j.tet.2012.11.003
日期:2013.1
A series of novel pyridine stabilized Pd-NHC complexes were developed, which revealed high activities and broad substrates tolerance in the amination of various (hetero)-aryl chlorides. Besides various secondary amines, a wide range of primary anilines and aliphatic amines were also well tolerated. The results highlight us a new strategy to increase catalyst activity in the future catalyst design by alternating the sigma-donor property and flexibility of NHC ligands. (C) 2012 Elsevier Ltd. All rights reserved.