Ring-Opening Cycloaddition of Aziridines to Ketenimines
作者:Heiko Maas、Corinne Bensimon、Howard Alper
DOI:10.1021/jo970562+
日期:1998.1.1
The Lewis acid-catalyzed addition of aziridines to ketenimines gave substituted pyrrolidonimines in 47-87% yields. The hard Lewis acid LiClO(4) proved to be superior to the soft [(PhCN)(2)PdCl(2)], affording higher yields under milder conditions. The reaction is regioselective and occurs with complete stereoselectivity using [(PhCN)(2)PdCl(2)] and with a small amount of racemization in the case of