Fe-catalyzed Fukuyama-type indole synthesis triggered by hydrogen atom transfer |
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| Authors: | Tianze Zhang Min Yu Hanmin Huang |
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| Institution: | Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, Hefei 230026 P. R. China, |
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| Abstract: | Fe, Co, and Mn hydride-initiated radical olefin additions have enjoyed great success in modern synthesis, yet the extension of other hydrogen radicalophiles instead of olefins remains largely elusive. Herein, we report an efficient Fe-catalyzed intramolecular isonitrile–olefin coupling reaction delivering 3-substituted indoles, in which isonitrile was firstly applied as the hydrogen atom acceptor in the radical generation step by MHAT. The protocol features low catalyst loading, mild reaction conditions, and excellent functional group tolerance.A mild and efficient method has been developed to synthesize 3-substituted indoles via an Fe-catalyzed radical isonitrile–olefin coupling reaction initiated by MHAT to isonitriles. |
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