M. Prato et al., ADDITION OF QUADRICYCLANE TO C-60 - EASY ACCESS TO FULLERENE DERIVATIVES BEARING A REACTIVE DOUBLE-BOND IN THE SIDE-CHAIN, Journal of organic chemistry, 58(14), 1993, pp. 3613-3615
The reaction of C60 with quadricyclane gives a stable 6,6 adduct which
has been spectroscopically characterized. The double bond of the [2.2
.1]bicycloheptene moiety reacts readily with electrophiles (e.g., PhSC
l).