Pyrimidine ortho-quinodimethanes. Part 2: Synthesis of new [60]fullerene adducts based on substituted pyrimidine derivatives and their 1H NMR dynamic study

New fullerodihydroquinazolines with a different substitution pattern have been easily prepared from cyclobutapyrimidines via Diels-Alder reaction in a one synthetic step. Thermodynamic parameters of the new cycloadducts have been calculated from variable temperature 1 H NMR spectra.