ChemInform Abstract: Organocatalytic Asymmetric Conjugate Addition of Diaryloxazolidin-2,4-diones to Nitroolefins: An Efficient Approach to Chiral -Aryl--hydroxy Carboxylic Acids.
A series of chiral oxazolidin-2,4-diones is prepared by an asymmetric conjugate addition of diones (I) to nitroalkenes (II) in the presence of the urea catalyst PUFP.