Pd-Catalyzed Asymmetric Allylic Amination of Morita−Baylis−Hillman Adduct Derivatives Using Chiral Diaminophosphine Oxides: DIAPHOXs

Abstract

[reaction: see text] Asymmetric allylic amination of allylic carbonates prepared from racemic Morita-Baylis-Hillman adducts proceeded in the presence of Pd catalyst, chiral diaminophosphine oxide (DIAPHOX), and BSA, affording the corresponding chiral aza-Morita-Baylis-Hillman adduct derivatives in excellent yield with up to 99% ee. The cyclic reaction products could be converted into various synthetically useful compounds such as chiral cyclic beta-amino acids.