Enantioselective Conjugate Addition of Aromatic Amines toN-Alkenoyloxazolidinones Catalyzed by Iodido(binaphtholato)samarium
作者:Iréna Reboule、Richard Gil、Jacqueline Collin
DOI:10.1002/ejoc.200700861
日期:2008.1
Iodido(binaphtholato)samariumcatalyzes the Michael addition of aromaticamines to N-alkenoyloxazolidinones affording β-amino acid derivatives with enantiomeric excesses of up to 88 %. A study of the effect of temperature on the asymmetric induction revealed an isoinversion in two reactions. The observation of a non-linear effect suggests an equilibrium between several active species including dimers