Benzofuran synthesis via copper-mediated oxidative annulation of phenols and unactivated internal alkynesElectronic supplementary information (ESI) available. See DOI: 10.1039/c3sc51489g
The first example of copper-mediated oxidative annulation of phenols and unactivated internal alkynes to afford benzofuran derivatives was reported. Various phenols and unactivated internal alkynes were successfully employed. Mechanistic studies disclosed a new strategy on annulations of alkynes wit...
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