First synthesis of ring-B C60-substituted derivatives of N,N-(tetrachlorophthaloyl)dehydroabietylamine

A new route to ring-B C60-substituted derivatives of N,N-(tetrachlorophthaloyl) dehydroabietylamine from dehydroabietylamine was reported. This advance was used to achieve the first synthesis of methanofullerene derivatives 14–17 and dehydroabietylamine derivatives 2–13. NMR spectroscopy unambiguously proved that the methanofullerene derivatives were C1 symmetric structures with a 6,6-junction.