Potassium 4-iodylbenzenesulfonate (PIBS) is a thermally stable and water soluble hypervalent iodine
oxidant particularly useful as a recyclable reagent for oxidative iodination of alkenes, alkynes and ketones. This
reagent can be effectively recovered from the reaction mixture by treatment of the aqueous layer with Oxone at
60 °C followed by filtration of the precipitate.
Keywords: Iodination, iodine, iodoketones, alkyl iodides, iodomethoxylation, hypervalent iodine.
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