Regio/diastereo-controls of the Bingel-type biscyclopropanation of [60]fullerene by using bismalonates with a Trِger base analogue-derived tether

Four kinds of bismalonates tethered with a Trِger base derivative were synthesized and used for the double Bingel reaction of [60]fullerene. The regio/diastereoselectivities of the reaction were highly influenced by the structure of the Trِger base derivatives. Heteroaromatic analogues of the Trِger base were found to be applicable as the core of the tether.