Asymmetric Diels−Alder Reactions of 2-Pyrones with a Bifunctional Organic Catalyst
作者:Yi Wang、Hongming Li、Yong-Qiang Wang、Yan Liu、Bruce M. Foxman、Li Deng
DOI:10.1021/ja070859h
日期:2007.5.1
The reactions of 2-pyrones with electron-deficient dienophiles constitute a synthetically useful class of Diels−Alder reaction. By exploring cinchona alkaloid-derived organic molecules as acid−base bifunctionalcatalysts, we successfully developed the first highly enantioselective and diastereoselective catalytic Diels−Alder reaction with 2-pyrones. Furthermore, we demonstrated the possibility of using