GRAPHICAL ABSTRACTKI as iodine source for the synthesis of E-iodovinyl sulfones via metal-free iodosulfonylation of terminal alkynesAll authorsLu Yang, Deqing Hu, Li Wei & Yunyun Liu http://orcid.org/0000-0002-5553-1672https://doi.org/10.1080/10426507.2017.1359596Published online:06 September 2017