Rhodium-Catalyzed/Copper-Mediated Tandem C(sp<sup>2</sup>)–H Alkynylation and Annulation: Synthesis of 11-Acylated Imidazo[1,2-<i>a</i>:3,4-<i>a</i>′]dipyridin-5-ium-4-olates from 2<i>H</i>-[1,2′-Bipyridin]-2-ones and Propargyl Alcohols
作者:Ting Li、Zhiqiang Wang、Kun Xu、Wenmin Liu、Xu Zhang、Wutao Mao、Yongming Guo、Xiaolin Ge、Fei Pan
DOI:10.1021/acs.orglett.6b00177
日期:2016.3.4
A rhodium-catalyzed/copper-mediated tandem C(sp2)–H alkynylation and intramolecular annulation of 2H-[1,2′-bipyridin]-2-ones with propargyl alcohols for the synthesis of 11-acylated imidazo[1,2-a:3,4-a′]dipyridin-5-ium-4-olates is described.
铑催化/铜介导的串联C(sp 2)-H炔基化反应和2 H- [1,2'-联吡啶] -2-酮与炔丙醇的分子内环化反应,合成11-酰化的咪唑[1,描述了2- a:3,4- a ']双吡啶-5-鎓-4-油酸酯。