High-yield, regiospecific bis-functionalization of C70 using a Diels–Alder reaction in molten anthracene

Abstract

A regiospecific bis-adduct of C₇₀ with anthracene was prepared with unusually high yield (68%) by the Diels–Alder reaction in the absence of solvent (melt). The structure of the bis-adduct was an unexpected 12 o'clock isomer, as determined by single crystal X-ray diffraction, thermal gravimetric analysis (TGA) and spectroscopy.