Rhodium-Catalyzed/Copper-Mediated Tandem C(sp2)–H Alkynylation and Annulation: Synthesis of 11-Acylated Imidazo[1,2-a:3,4-a′]dipyridin-5-ium-4-olates from 2H-[1,2‿Bipyridin]-2-ones and Propargyl Alcohols

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• 作者：Ting Li ; Zhiqiang Wang ; Kun Xu ; Wenmin Liu ; Xu Zhang ; Wutao Mao ; Yongming Guo ; Xiaolin Ge ; Fei Pan
• 刊名：Organic Letters
• 出版年：2016
• 出版时间：March 4, 2016
• 年：2016
• 卷：18
• 期：5
• 页码：1064-1067
• 全文大小：360K
• ISSN：1523-7052

文摘

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.