M. Iyoda et al., SYNTHESIS AND PROPERTIES OF A NOVEL REDOX SYSTEM CONTAINING FULLERENEAND P-BENZOQUINONE, Journal of the Chemical Society, Chemical Communications, (17), 1994, pp. 1929-1930
Synthesis of a fullerene derivative of p-benzoquinone was carried out
using the [4 + 2]cycloaddition of C-60 to 3,6-dihydroxybenzocyclobuten
e, followed by DDQ oxidation.