Studies on sulfinatodehalogenation XIX. The reaction of perfluoroalkyl iodides and perfluoroalkanesulfonyl bromides with conjugated dienes

Perfluoroalkyl iodides reacted with conjugated dienes in aqueous acetonitrile solution in the presence of sodium dithionite at room temperature to give dimerization products, whereas, perfluoroalkanesulfonyl bromides reacted with conjugated dienes to form 1,4-adducts under actinic irradiation.