Studies on sulfinatodehalogenation XXIII. A new sulfinatodehalogenation reagent: thihurea dioxide1

HSO₂^? generated from thiourea dioxide and sodium bicarbonate in aqueous CH₃CN at 35–45°C reacted with perfluoroalkyl iodides, polyfluoroalkyl bromide, 1,1,1-trichloro-2,2,2-tri-fluoroethane and carbon tetrachloride to give the corresponding sulfinates in good yield. Furthermore, it was shown that the reagent was able to initiate the addition of perfluoroalkyl iodide to olefins and alkynes at 30°C.