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Visible-light-mediated C3-azolylation of imidazo[1,2-a]pyridines with 2-bromoazoles†
Qing Chang,Zhongjie Wu,Lu Yu,Ping Liu,Peipei Sun
Organic & Biomolecular Chemistry Pub Date : 06/07/2017 00:00:00 , DOI:10.1039/C7OB00883J
Abstract

The C3-azolylation of imidazo[1,2-a]pyridines was developed via a visible light-mediated reaction of imidazopyridines with 2-bromoazoles catalyzed by Ir(ppy)2(dtbbpy)PF6 under mild conditions. For the imidazo[1,2-a]pyridines with various substituents on benzene or the pyridine ring and a variety of azoles, the reaction proceeded smoothly to give 3-(azol-2-yl)imidazo[1,2-a]pyridines in moderate to good yields.

Graphical abstract: Visible-light-mediated C3-azolylation of imidazo[1,2-a]pyridines with 2-bromoazoles
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