Catalytic enantio- and diastereoselective formation of β-sultones: Ring-strained precursors for enantioenriched β-hydroxysulfonyl derivatives

Article abstract of DOI:10.1002/anie.200604796

(Chemical Equation Presented) Sultones swing! Sulfenes, the highly reactive sulfonyl equivalents of ketenes, were used for the first time as substrates in asymmetric catalysis. A [2+2] cyclo-cyclocondensation reaction catalyzed by a tertiary amine enabled