Herein an exogenous oxidant- and metal-free electrochemical heteroaryl migration triggered by N radicals to construct new N-C bonds was developed. This methodology features a high atom economy and utilization rate of energy, and it is insensitive to water and air. Moreover, a user-friendly undivided cell was employed. The use of an organic catalyst makes it more efficient, green, and practical.
Synthesis of [60]Fullerene-Fused Tetrahydroazepinones and Azepinonimines via Cu(OAc)<sub>2</sub>-Promoted <i>N</i>-Heteroannulation Reaction
A convenient and efficient Cu(OAc)(2)-mediated N-heteroannulation reaction of [60]fullerene with N-sulfonylated o-amino-aromatic methyl ketones or O-alkyl oximes has been reported for the synthesis of novel and scarce [60]fullerene-fused tetrahydroazepinones and -azepinonimines in a highly, selective manner. Moreover, a possible mechanism involving two pathways is proposed on the basis of the experimental observations.