Reactions of [60]Fullerene with Acetone under Basic Condition: Nucleophilic Ring Opening of the [5,6]-Cyclopropane in C and Formation of the Substituted Methano[60]Fulleroids.

The reactions of C with acetone were carried out under basic condition in the presence of 1.0 M TBAOH (tetra--butylammonium hydroxide) methanol solution and ArCHBr (Ar = Ph or -BrPh), where methano[60]fulleroids with a novel 1,1,4,9,9,25-configuration were obtained and structurally characterized by single crystal diffraction. The product was formed via the ring-opening reaction of the [5,6]-cyclopropane by the nucleophilic addition of MeO, which is different from the reactions of other ketones reported previously.