Efficient synthesis of 3-aminocarbazoles from N-sulfonyl-1,2,3-triazoles and 2-alkenylindole

An efficient two-step protocol for the synthesis of 3-aminocarbazoles has been accomplished from N-sulfonyl-1,2,3-triazoles and 2-alkenylindoles. The present method tolerates various functional groups and allows the synthesis of diverse 3-aminocarbazoles in good to excellent yield. Furthermore, the developed method was successfully applied in the synthesis of indolocarbazole derivative through an oxidative amination. Graphical abstract: An efficient two-step protocol for synthesizing 3-aminocarbazoles has been accomplished from N-sulfonyl-1,2,3-triazoles and 2-alkenylindoles. [Figure not available: see fulltext.].