Journal of Organic Chemistry p. 6357 - 6363 (2016)
Update date:2022-08-03
Topics:
Wang, Ze
Li, Bin
Zhang, Xinying
Fan, Xuesen
In this paper, we report an efficient one-pot synthesis of 1,2,3-triazole/quinoline-fused imidazo[1,2-a]pyridines starting from 2-(2-bromophenyl)imidazo[1,2-a]pyridines, alkynes, and sodium azide. This novel method involves a one-pot bimetallic relay-catalyzed cascade process combining azide-alkyne cycloaddition, C-N coupling between 1,2,3-triazole and aryl bromide, and intramolecular cross dehydrogenative C-C coupling between 1,2,3-triazole and imidazo[1,2-a]pyridine. Notable features of this protocol include simple starting materials, sustainable oxidants, reduced synthetic steps, and high efficiency.
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