cis-Selective aziridination of cis- or trans-α,β-unsaturated amides using diaziridine
作者:Kiyoto Hori、Hiroyasu Sugihar、Yoshio N. Ito、Tsutomu Katsuki
DOI:10.1016/s0040-4039(99)00939-9
日期:1999.7
Aziridination of alpha,beta-unsaturated amides was effected by treatment with lithiated 3,3-pentamethylenediaziridine in high diastereoselectivity. cis-Aziridine was the predominant diastereomer irrespective of the geometry of the substrates. A stepwise mechanism, 1,4-addition of a lithiated diaziridine to alpha,beta-unsaturated amides and subsequent ring closure at the nitrogen atom was proposed to explain the unusual cis-selectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.