Sulfoxide‐to‐Sulfilimine Conversions: Use of Modified Burgess‐Type Reagents

Sulfoxides can directly be converted into N‐cyanosulfilimines using a new Burgess‐type reagent. By applying this strategy with a related reagent variant, synthetically valuable NH‐sulfoximines have been prepared from sulfoxides via N‐protected sulfilimines. The practical three‐step reaction sequence is generally high yielding and applicable to a wide range of substrates. The sulfoxide‐to‐sulfilimine conversion can also be performed under solvent‐reduced conditions in a ball mill.