Highly Efficient Cu(OAc)2-Catalyzed Dimerization of Monofunctionalized Hydrofullerenes Leading to Single-Bonded [60]Fullerene Dimers

Dimers are a girl's best friend: The title reaction allows the formation of single‐bonded fullerene dimers with extremely high chemical yield and high compatibility with various functional groups, which are highly soluble in organic solvents. The use of Cu(OAc)2 catalyst with dimethylformamide or acetonitrile as additives under air is the critical factor in achieving the highly efficient catalytic dimerization.