Cu(OAc)2·H2O-catalyzed N-arylation of nitrogen-containing heterocycles
作者:Zhong-Lin Xu、Hong-Xi Li、Zhi-Gang Ren、Wei-Yuan Du、Wei-Chang Xu、Jian-Ping Lang
DOI:10.1016/j.tet.2011.05.025
日期:2011.7
In the absence of any additional ligands, the efficientN-arylation of nitrogen-containing heterocycles with aryl iodides catalyzed by relative low catalyst amount of Cu(OAc)2·H2O was developed. This simple catalytic system is involved in the C–N cross-coupling reaction and works for a variety of pyrazole, pyrrole, imidazole, triazole, indole, benzoimidazole, benzotriazole, carbazole, and anilines
An efficient Cu-catalyzed cascade reaction involving N–O bond cleavage and C–C/C–N/N–N bond formations is developed to afford various 1,3- and 1,3,4-substituted pyrazoles.