Newradical annulation reactions are described involving addition of cyano-substituted alkyl and sulfanyl radicals to aromatic isonitriles. The tandemcyclisation of the resulting imidoyl radicals onto the cyano group affords cyclopenta- and thienoquinoxalines, respectively. The intervention of the isonitriles in the aromatisation process of the cyclohexadienyl radicals is discussed, as well as the
nitroarylamines, allowing straightforward access to two classes of novelquinoxaline derivatives, is reported. The reaction proceeds with operational simplicity, an easily available catalyst system, and a broad substrate scope, and without the need for pre-functionalization, which offers the potential for further design of new reductive transformations of renewable resources into value-added products.