Effects of additional stereogenic centres and cation in the nucleophilic epoxidation of vinylsulfoximines with metal alkylperoxides
作者:Andrew D. Briggs、Richard F.W. Jackson、William Clegg、Mark R.J. Elsegood、Josephine Kelly、Paul A. Brown
DOI:10.1016/0040-4039(94)85048-8
日期:1994.9
Epoxidation of vinylsulfoximines using metalalkylperoxides proceeds with varying degrees of stereoselectivity, depending both on the metalcation and the steric bulk of the alkyl group. The stereochemical outcome of the epoxidation of substrates bearing an allylic asymmetric centre is also dependent on the epoxidising agent, and very high levels of stereoselectivity may be obtained in the formation