N-Heterocyclic Carbene-Catalyzed Formal [3+3] Annulation of Alkynyl Acylazoliums for the Synthesis of Benzofuro[3,2-<i>b</i>]pyridin-2-ones
作者:Xiaoxue Wang、Yuebo Shao、Simiao Zhang、Tao Lu、Ding Du
DOI:10.1021/acs.joc.1c01230
日期:2021.9.3
acid esters with N-heterocyclic carbene catalysis, a formal [3+3] annulation of alkynyl acylazoliums with indolin-3-ones has been developed for the rapid construction of structurally interesting benzofuro[3,2-b]pyridin-2-ones with potential bioactivities. This protocol provides a highly efficient and simple method for the synthesis of the target molecules under mild reaction conditions with a wide substrate