摘要:
The stereocontrolled addition of allylic metals to chiral non-racemic nitrones promoted by the addition of Lewis acids is described. Whereas for alpha-alkoxy nitrones the stereocontrol depends on the Lewis acid used as an activator, for alpha-amino nitrones the diastercofacial course of the reaction depends on the protection of the a-amino group. The successful implementation of the methodology is represented by the enantiodivergent synthesis of D- and L-allylglycine. (c) 2006 Elsevier Ltd. All rights reserved.