OXAZOLIDINOFULLERENE

The first synthesis of the oxazolidinofullerene 2 has been achieved by cycloaddition of C-60 with N(3)CO(2)Et, followed by the treatment of the product with BBr3 at room temperature. The structure of 2 was unam biguously established by spectroscopic means (C-13 NMR and MS). Methyl cyclohexane solutions of aziridinofullerene 1a and oxazolidinofulleren e 2 exhibited, at ambient temperature, fluorescence emission at lambda (max) 686 and 691 nm, respectively. with vibronic fine structure. The fluorescence lifetimes and quantum yields for 1a and 2 have been measu red.