The preparation of sulfur-containing molecules has long been a mainstay of organic synthesis as a result of their broad application to organic and medicinal chemistry. 1 Conjugate addition of sulfur-centered nucleophiles to α,β-unsaturated carbonyls serves as a powerful synthetic method in this area of sulfur chemistry. 2, 3, 4 and 5 While an asymmetric version of this Michael addition process would furnish enantiomerically enriched adducts, to date reports of this reaction ...
