Jh. Xu et al., AN UNEXPECTED REACTION - [2-CYCLOADDITION OF [60]FULLERENE WITH 4,4,5,5-TETRAMETHYLIMIDAZOLIDINE-2-THIONE AND DL-VALINE(1]), Tetrahedron letters, 38(37), 1997, pp. 6613-6616
C-60 reacted with DL-valine and 4, 4, 5, 5-tetramethylimidazolidine-2-
thione in a new reaction to give a new C-60 spiro-compound 3 which was
characterized by FT-IR, NMR and FD-mass spectra. The possible reactio
n mechanism was put forward. (C) 1997 Elsevier Science Ltd.