Synthesis of multisubstituted furans via Cu(<scp>i</scp>)-catalyzed annulation of ketones with alkynoate under ligand- and additive-free conditions
作者:Zaigang Luo、Yuyu Fang、Yu Zhao、Peng Liu、Xuemei Xu、Chengtao Feng、Zhong Li、Jie He
DOI:10.1039/c5ra23058f
日期:——
A facile and efficient annulationstrategy for the synthesis of multisubstituted furan derivatives has been achieved under mild conditions. The developed transformation via C(sp3)–H bond functionalization catalyzed by copper(I) salts using benzoyl peroxide as an external oxidant possess some obvious advantages. This ligand- and additive-free cyclization protocol offers an environmentally friendly and