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Synthesis of (2H)‑Indazoles through Rh(III)-Catalyzed Annulation Reaction of Azobenzenes with Sulfoxonium Ylides

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journal contribution
posted on 16.03.2018, 00:00 by Hyunjung Oh, Sangil Han, Ashok Kumar Pandey, Sang Hoon Han, Neeraj Kumar Mishra, Saegun Kim, Rina Chun, Hyung Sik Kim, Jihye Park, In Su Kim
The rhodium­(III)-catalyzed C–H functionalization followed by intramolecular annulation reactions between azobenzenes and sulfoxonium ylides is described. This protocol leads to the efficient formation of 3-acyl (2H)-indazoles with a range of substrate scope. A high level of chemoselectivity and functional group tolerance of this transformation were also observed.