Moreover, this strategy was also successfully applied to the asymmetric [4 + 1]/[3 + 2] cycloadditioncascade of sulfurylides with alkene-tethered nitroolefins, and the corresponding enantioenriched fused heterocycles (up to 87:13 e.r. and >95:5 d.r.) were obtained in good to excellent yields (54–95% yields).
A hydrogen‐bond‐mediated asymmetric [4+1] annulation/rearrangement cascade of stable sulfur ylides and nitroolefins was developed. This reaction provides a facile route to enantioenriched 4,5‐substituted oxazolidinones in moderate to excellent isolated yields (65–96 %) with excellent stereocontrol (up to more than 95:5 d.r. and 97:3 e.r.). This methodology was successfully applied to the concise synthesis
A novel cascade organocatalysis that allows efficient and rapid access to diverse and structurally complex oxazolidin-2-ones from simple starting materials and catalysts has been developed. A possible mechanism of this reaction has been proposed based on D- and (13)C-labeling experiments.