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Letters in Organic Chemistry

Author(s): Zhou Rong*, Li Yu-qin, Ding Yan-li, Qin Xiao-li, Sha Jing, Li Ping, Jin Lu and Wang Huan-huan*

DOI: 10.2174/1570178619666220405203702

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The Synthesis of 2-substituted Benzo[b]furans Catalyzed by Ni/5-Bromo- 2,2’-bipyridine

Page: [1149 - 1153] Pages: 5

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Abstract

A tandem system that enabled the synthesis of 2-substituted benzo[b]furans from 2- halophenols and aryl acetylenes catalyzed by Ni/5-bromo-2,2’-dipyridine was explored. The protocol was found effective for one-pot cascade coupling cyclization reaction producing benzo[b]furan compounds, and heteroaryl substrates were observed to be compatible for this system as well, giving corresponding products in 20-70% yields.

Keywords: NiCl2, 2-substituted benzo[b]furan, tandem reaction, 2-halophenol, alkyne, sonogashira reaction.