We disclose a new protocol for enantioselective, vicinal disulfonoxylation of terminal olefins. Our procedure is operationally simple and involves stirring olefin substrate with 1.2 equivalents of an enantiopure I(III) reagent and two equivalents of a sulfonic acid in 1,2-dichlorobenzene at 0 °C for 19 hours. No special precautions are required to exclude air or ambient moisture. The reaction is scalable, many interesting functional groups survive, and the products are useful chirons. • Osmium-free enantioselective vicinal disulfonoxylation • Green oxidation • High enantioselectivities
Manna et al. (Wed,) studied this question.