Alkenes (1) reacts with chloramine-T in presence of the catalyst silver nit
rate to afford aziridines (2). The aziridines underwent ring expansion with
the acrylo nitrile or ethyl acrylate (3) in the presence of solid sodium h
ydroxide to form pyrrolines (4) in 40-58% yield. (C) 2001 Elsevier Science
Ltd. All rights reserved.