Substituted Aziridines by Lithiation−Electrophile Trapping of Terminal Aziridines
作者:David M. Hodgson、Philip G. Humphreys、John G. Ward
DOI:10.1021/ol050060f
日期:2005.3.1
stereoselective deprotonation of N-Bus (Bus = tert-butylsulfonyl)-protected terminal aziridines with lithium 2,2,6,6-tetramethylpiperidide generates a nonstabilized (H-substituted) aziridinyl anion that undergoes in situ or external electrophile trapping under experimentally straightforward conditions to give trans-disubstituted aziridines in good to excellent yields.
Dimerization and Isomerization Reactions of α-Lithiated Terminal Aziridines
作者:David M. Hodgson、Philip G. Humphreys、Steven M. Miles、Christopher A. J. Brierley、John G. Ward
DOI:10.1021/jo701901t
日期:2007.12.1
The scope of dimerization and isomerization reactions of α-lithiated terminal aziridines is detailed. Regio- and stereoselective deprotonation of simple terminal aziridines with lithium 2,2,6,6-tetramethylpiperidide (LTMP) or lithium dicyclohexylamide (LiNCy2) generates trans-α-lithiated terminal aziridines. These latter species can then undergo dimerization or isomerization reactions depending on