Benzofuran synthesis via copper-mediated oxidative annulation of phenols and unactivated internal alkynes
作者:Ruyi Zhu、Jiangbo Wei、Zhangjie Shi
DOI:10.1039/c3sc51489g
日期:——
example of copper-mediated oxidativeannulation of phenols and unactivatedinternalalkynes to afford benzofuran derivatives was reported. Various phenols and unactivatedinternalalkynes were successfully employed. Mechanistic studies disclosed a new strategy on annulations of alkynes with phenolsthrough reversible electrophilic carbocupration of phenol followed by alkyne insertion and cyclization