Regiocontrolled synthesis of 1,2-di(organo)fullerenes via copper-assisted 1,4-aryl migration from silicon to carbon.
A concise and efficient way to generate fullerene cationic species through the oxidation of a fullerene radical or a fullerene anion with a Cu(II) salt has been developed. It was demonstrated that the cationic fullerene is useful for functionalization of fullerene, in particular, for the synthesis of noncyclic 1,2-di(organo)[60]fullerene derivatives that can be selectively prepared through intramolecular 1,4-aryl migration of an aryl group from a silicon atom to the fullerene core.
Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Ying
Y
Zhang
Yutaka
Y
Matsuo
Eiichi
E
Nakamura