A heterogeneous gold(I)-catalyzed cascade annulation of aldehydes with propargylamine leading to 3-substituted 2,5-dimethylpyrazines
作者:Quan Nie、Fang Yao、Feiyan Yi、Mingzhong Cai
DOI:10.1016/j.jorganchem.2017.07.012
日期:2017.10
A heterogeneous gold(I)-catalyzed cascade annulation reaction of aldehydes with propargylamine was achieved in 1,2-dichloroethane at 40 °C by using an MCM-41-immobilized phosphine gold(I) complex[MCM-41-PPh3-AuNTf2] as catalyst, yielding a variety of 3-substituted 2,5-dimethylpyrazines in good to excellent yields. The new heterogeneous gold(I) catalyst can easily be prepared via a simple procedure