A novel synthesis of 6-phenyl- and 6-o-tolyl-dibenzo[b,d]pyrylium perchlorates
Abstract
9-Phenyl- and 9-o-tolyl-fluorene are converted into 6-phenyl- and 6-o-tolyl-dibenzo[b,d]pyrylium perchlorates, respectively, by acid-catalysed rearrangement of the 9-hydroperoxides.