Asymmetric Counterion Pair Catalysis: An Enantioselective Brønsted Acid-Catalyzed Protonation
作者:Magnus Rueping、Thomas Theissmann、Sadiya Raja、Jan W. Bats
DOI:10.1002/adsc.200800020
日期:2008.5.5
A new asymmetric Brønstedacid-catalyzedcascadereactioninvolving a 1,4-addition, enantioselective protonation and 1,2-addition has been developed. This organocatalytic cascade not only provides for the first time 3- and 2,3-substituted tetrahydroquinolines and octahydroacridines in good yields with high dia- and enantioselectivities under mild reaction conditions but additionally represents the