Organocatalytic Asymmetric Synthesis of Chiral Pyrrolizines by Cascade Conjugate Addition−Aldol Reactions
作者:Ju-Yeon Bae、Hyo-Jun Lee、Seok-Ho Youn、Su-Hyun Kwon、Chang-Woo Cho
DOI:10.1021/ol101811c
日期:2010.10.1
N-centered heteroaromatic nucleophile for organocatalyticcascadereactions, pyrroles underwent the enantio- and diastereoselective organocatalyticcascade conjugate addition−aldol reactions of α,β-unsaturated aldehydes that afford the highly functionalized chiral pyrrolizines bearing three consecutivestereocenters in good yields, high enantioselectivities (90−98% ee), and excellent diastereoselectivities