Molecular iodine exhaustively iodinates aromatic hydrocarbons
in the presence of potassium peroxodisulfate, concentrated sulfuric
acid, and trifluoroacetic acid to give the periodinated aromatic
compounds. Benzene and other moderately activated and deactivated
arenes are readily converted into the corresponding periodinated
derivatives in good to high yields.
arenes - molecular iodine - periodoarenes - iodination - potassium persulfate