Synthesis of (E)--Iodovinyl Sulfones via HI-mediated Vicinal Iodosulfonylation of Alkynes with Sodium Sulfinates

Hydroiodic acid-mediated vicinal iodosulfonylation reaction of alkynes with sodium sulfinates is proposed for the synthesis of (E)-beta-iodovinyl sulfones. The method is easy to operate, environmentally friendly, using inexpensive and easily available raw materials, and giving the target products with good regio- and stereoselectivity in satisfactory yields.