Novel π-Expanded Radialene Macrocycles with Inner Cavity
摘要:
Polyenyne macrocycles with pi-extended [9]- and [12]radialene frameworks have been synthesized. These radialenes exhibit restricted rotation of the aromatic rings, and the D-3- and D-4-symmetric structures in solutions have been determined by dynamic NMR. The macrocyclic radialenes bear small to medium inner cavities, and the small cavity of the :c-extended [9]radialene can incorporate a silver cation.