Supramolecular masks for the regioselective synthesis of Diels–Alder hetero-tris-adduct C 60 fullerene

Sequential Ru-catalyzed cycloisomerization/Diels–Alder functionalization of C
60
, combined with supramolecular nanocapsule masking, enables unprecedented access to a single hetero-tris-adduct with high regioselectivity.