In the process of developing a method of synthesis of the cyclohept [f] indene derivatives 2b and 3b, a method of preparing benzo [d] tropones from o-bisbromomethylarenes and ketone enamines has been devised. Nitration and bromination of benzo [d] tropones in sulfuric acid solution have been observed to occur excusively in the OL positions of the benzene ring. On quenching the carbanion of 2b (formed in dimethyl sulfoxide) with deuterium oxide all ...
