A simple synthesis of bitropones and conversion of 2,2′-bitropone into dicyclohepta[b,d]furan dication, a novel dication species
Abstract
The nickel-catalysed coupling of 2-, 3-, and 4-bromotropone gave the corresponding bitropones in moderate yields; 2,2′-bitropone was converted b;y trifluoromethanesulphonic anhydride into dicyclohepta[b,d]furan dication, a novel tricyclic dication system.