Ligand-Free Copper-Catalyzed Arylation of Imidazole and<i>N,N</i>′-Carbonyldiimidazole, and Microwave-Assisted Synthesis of<i>N</i>-Aryl-1<i>H</i>-imidazoles
作者:Xiao-Dong Yang、Liang Li、Hong-Bin Zhang
DOI:10.1002/hlca.200890156
日期:2008.8
Microwave-assistedarylation of 1H-imidazoles and N,N′-carbonyldiimidazole under ligand-free copper-mediated conditions in tetraethyl orthosilicate is reported. Valuable evidence for understanding of the Cu-catalyzed mechanism of the Ullmann reaction is also presented.