Ferric Perchlorate Promoted Reaction of [60]Fullerene with <i>N</i>‑Sulfonyl Aldimines: Synthesis and Functionalization of Fulleroxazolidines

The rare fulleroxazolidines <b>2</b> were successfully synthesized by the facile ferric perchlorate promoted reaction of [60]­fullerene with various <i>N</i>-sulfonyl aldimines <b>1</b>. Further functionalization of fulleroxazolidines by arenes in the presence of boron trifluoride afforded 1,4-bisarylation products <b>4</b>. A possible reaction mechanism for the formation of the fulleroxazolidines is proposed.