摘要:
Oxazoline and imidazoline functionalization of a singly bonded C-60 dimer is achieved via a one-pot reaction of C60HBn with OH- and aromatic nitriles, where the OH- not only functions as a Bronsted base that deprotonates C60HBn but also as a nucleophile that initiates the nucleophilic addition to the fullerene cage. The structures of the obtained oxazolinated and imidazolinated C-60 dimeric compounds have been established by HRMS, UV-vis, and H-1, C-13, and HMBC NMR characterizations and computational calculations. The reaction mechanism is studied with the in situ vis-near-IR spectra, which shows that the use of I-2 is crucial for the functionalization of the C-60 dimer, indicating that it is likely the dimeric molecule rather than the fragment of the dimer that is involved in the reaction.