The HOF⊙ CH3CN complex, easily prepared by passing F2 through aqueous acetonitrile, is an exceptionally efficient oxygen transfer agent. All types of sulfides have been oxidized to sulfones in excellent yields, in a few minutes at room temperature. The reaction proceeds through the formation of sulfoxides which at low temperatures of around-75° C could be isolated in good yields. It was demonstrated through a reaction with thianthrene 5-oxide ( ...
