C-60 reacted with paraformaldehyde and DL-valine in dry toluene under
nitrogen to give a monoadduct. Under the similar conditions,C-70 gave
a bisadduct. Both products were characterized by FT-IR,UV-Vis,EI-MS an
d NMR. The studies of the cyclic voltammetry showed that the abilities
of donating electron of the products were increased compared to C-60
and C-70,respectively.