Synthesis of 3-Fluoroindoles via Photoredox Catalysis
Liubov I. Panferova, Vladimir O. Smirnov, Vitalij V. Levin, Vladimir A. Kokorekin, Marina I. Struchkova and Alexander D. Dilman*
*N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, 119991 Moscow, Russian Federation, Email: adil25mail.ru
L. I. Panferova, V. O. Smirnov, V. V. Levin, V. K. Kokorekin, M. I. Struchkova, A. D. Dilman, J. Org. Chem., 2017, 82, 745-753.
DOI: 10.1021/acs.joc.6b02344 (free Supporting Information)
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A ruthenium photocatalyst mediates a synthesis of 3-fluoroindoles from N-arylamines substituted with the CF2I group in the presence of a substoichiometric amount of triphenylphosphine upon irradiation with blue light. The starting N-arylamines are readily obtained by nucleophilic iododifluoromethylation of iminium ions.
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