Highly Enantioselective Relay Catalysis in the Three-Component Reaction for Direct Construction of Structurally Complex Heterocycles
作者:Chao Wang、Zhi-Yong Han、Hong-Wen Luo、Liu-Zhu Gong
DOI:10.1021/ol1006086
日期:2010.5.21
A highly enantioselective three-component cascadereaction, consisting of an enantioselective [4+2] cycloaddition reactioncatalyzed by chiral phosphoric acid and a subsequent catalytic intramolecular hydroamination by gold(I) complex, provides a unique method to access structurally diverse julolidine derivatives in high optical purity.
Chiral Gold Phosphate Catalyzed Tandem Hydroamination/Asymmetric Transfer Hydrogenation Enables Access to Chiral Tetrahydroquinolines
作者:Yu-Liu Du、Yue Hu、Yi-Fan Zhu、Xi-Feng Tu、Zhi-Yong Han、Liu-Zhu Gong
DOI:10.1021/acs.joc.5b00153
日期:2015.5.1
A highly efficient chiral gold phosphate-catalyzed tandem hydroamination/asymmetric transfer hydrogenation reaction is described. A series of chiral tetrahydroquinolines were obtained in excellent yields and enantioselectivities. In this reaction, the gold catalyst enables both the hydroamination step as a pi-Lewis acid and the asymmetric hydrogen-transfer process as an effective chiral Lewis acid.