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

Abstract Hydroiodic acid‐mediated vicinal iodosulfonylation reaction of alkynes with sodium sulfinates is proposed for the synthesis of ( E )‐ β ‐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.