Camphor-derived sulfonylhydrazines : catalysts for Diels-Alder cycloadditions

Abstract Camphor-derived sulfonylhydrazines proved to be very active for organocatalyzed Diels–Alder cycloadditions with cyclopentadiene. Good chemical yields and enantiomeric excesses up to 89% and 88% are obtained for endo / exo adducts.