Tribenzotriquinacenes Bearing Six-Fold Benzofuran Extensions: Electron-Rich <i>C</i>_3<i>v</i>-Symmetrical Hosts for C₆₀

Abstract

New tribenzotriquinacene (TBTQ) hosts bearing six-fold peripheral benzofuran functionalization have been synthesized. The three polycondensed arene wings were shown to operate optically independently and to generate deeply bowl-shaped C(3v)-symmetrical frameworks that act as relatively weak hosts toward C(60), as revealed by (1)H NMR spectroscopy.