Pd-Catalyzed Oxidative Annulation of Aryl Ethers with Alkynes: Synthesis of Functionalized Spirocycles and Naphthalenes
作者:Shiyong Peng、Zhonghao Sun、Huijuan Zhu、Nuan Chen、Xiaobo Sun、Xiaojie Gong、Jian Wang、Lei Wang
DOI:10.1021/acs.orglett.0c00970
日期:2020.4.17
dearomative [2+2+1] annulations of aryl ethers with alkynes are reported via para-selective C-H functionalization, providing highly functionalized spirocyclohexadienones in moderate to excellent yields undermild reaction conditions. Importantly, mechanistic investigation indicated an unusual C-O bond cleavage was involved. Moreover, polyarylated naphthalenes could be obtained via oxidative [2+2+2] annulation