Copper-Catalyzed C(sp2)—H Amidation with Azides as Amino Sources.
2015
A copper-catalyzed C-H amidation process, with azides as amino sources under oxidant-free conditions, has been developed. When N-heterocycles were employed as directing groups, sulfonylazide and benzoylazide could be used as amidating reagents to provide corresponding N-arylamides. When amidines or imine were used, tandem C-N/N-N bond formation occurred to afford indazole derivatives in one pot.
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