A cascade radical addition/cyclization reaction of 2-vinylanilines with alkynes for the synthesis of biologically important naphthalene derivatives is reported. In this transformation, the in-situ-formed diazonium salts from 2-vinylanilines served as efficient aryl radical precursors and the reaction was run under metal-free conditions.
Keywords: diazonium salts; electron catalysis; metal free; naphthalene compounds; radical cyclization.
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.