Chiral enamide. Part 1: Epoxidations of chiral enamides. A viable approach to chiral nitrogen stabilized oxyallyl cations in [4+3] cycloadditions

The first study of stereoselective epoxidations of chiral enamides is described here. Its potential in the synthesis of chiral alpha-keto aminals as a viable approach to nitrogen stabilized oxyallyl cations in stereoselective [4+3] cycloadditions is also illustrated. (C) 2002 Elsevier Science Ltd. All rights reserved.