Rhodium(III)-Catalyzed Oxidative Coupling of 5-Aryl-1<i>H</i>-pyrazoles with Alkynes and Acrylates
作者:Xingwei Li、Miao Zhao
DOI:10.1021/jo201530r
日期:2011.10.21
[RhCp*Cl2]2-catalyzed oxidative coupling of 5-aryl-1H-pyrazoles with alkynes and acrylates has been achieved using Cu(OAc)2 as an oxidant. Coupling with alkynes afforded six-membered azacycles as a result of C–C and C–N coupling. Coupling with acrylates followed a process of diolefination and a subsequent aza-Michael cyclization.