The Use of Enantiomerically Pure α,β-Unsaturated N-Acyloxazolidin-2-One in Diastereoselective Baylis-Hillman Type Reaction Mediated by SmI2

(R)-3-(2-Bromo-3-phenyl-acryloyl)-5,5-dimethyl-4-phenyl-oxazolidin-2-one 3 which is readily available from (R)-phenylglycine, was shown to be an effective chiral auxiliary for stereoselective Baylis- Hillman type reaction with aldehydes in the presence of SmI2.