H. Takeshita et al., HIGH-PRESSURE DIELS-ALDER REACTION OF [60]FULLERENE WITH SEVERAL TROPONES - CHARACTERIZATION OF THE 1 1-CYCLOADDUCTS/, Journal of the Chemical Society. Perkin transactions. I, (11), 1994, pp. 1433-1437
The high-pressure Diels-Alder reaction of fullerite with tropone and s
everal of its derivatives under 300 MPa gave 1:1-[4 + 2] cycloadducts
of C-60 in good yields. Their H-1 and C-13 NMR spectra were consistent
with the structures depicted. These compounds quantitatively regenera
te starting materials upon thermolysis.