Efficient nitrogen transfer from aldehyde-derived N-acyloxaziridines
摘要:
The effect of solvent polarity on the reaction of 3-aryl-N-carboxamido- and 3-aryl-N-alkoxycarbonyl oxaziridines has been studied and an efficient procedure for high yielding sulfimidation developed by use of polar solvents. The first examples of asymmetric sulfimidation using novel chiral oxaziridines have been carried out with low diastereoselectivity (up to 30% de). (C) 2003 Elsevier Science Ltd. All rights reserved.
Heteroatom transfer to alkenes by N-protected-oxaziridines: new reaction pathways and products
作者:Alan Armstrong、Ian D. Edmonds、Martin E. Swarbrick
DOI:10.1016/j.tetlet.2005.02.034
日期:2005.3
N-Alkoxycarbonyl- and N-carboxamido-oxaziridines are shown to react with aromatic alkenes to give epoxide, aziridine or hydro-oxidation products, in ratios depending on the oxaziridine structure. Chiral oxaziridines can effect epoxidation and hydro-oxidation with promising levels of asymmetric induction. (c) 2005 Elsevier Ltd. All rights reserved.