Lithiation-electrophilic trapping of N-sulfonyl-activated ethylene aziridines
作者:Jianhui Huang、Stephen P. Moore、Peter O'Brien、Adrian C. Whitwood、John Gilday
DOI:10.1039/b815957b
日期:——
A detailed study on the lithiation-electrophilic trapping of N-sulfonyl ethylene aziridines is described. The optimum results required use of a N-2,4,6-tri-iso-propylbenzenesulfonyl activating group and lithiation using 3 equiv. of s-BuLi–PMDETA for 1 minute before addition of the electrophile. In situ trapping with Me3SiCl was also successful. Electrophilic trapping with aldehydes provided a stereoselective