A Convenient Route to Functionalized Branched-Chain Sugars Via a Tosyl-Epoxide Derivative

α-Oxy sulfones and sulfoximines: versatile intermediates

“…By contrast, some examples are reported where the regioselectivity of the nucleophilic attack is the opposite of the common one; ring opening occurs on the carbon bearing the sulfonyl moiety. These examples 25,336 are listed in Scheme 47. No explanation to date has been proposed for this unusual behaviour, but it could be related to steric hindrance.…”