has been reported. The synthesis was conducted via a one-pot procedure consisting of aminohalogenation and in situ intramolecular S N 2 substitution. Triethylamine was found to be an effective base for the in situ cyclization for most substrates. Interestingly, for several enone cases, a slightly modified procedure in which 1.0 equivalent of p-TsNCl 2 was slowly added into 2.0 equivalents of enone
                                    已经报道了通过使用 α,β-不饱和酯和酮有效和实用地合成 Np-tosyl-aziridine-2-酮和
羧酸盐。通过由
氨基卤化和原位分子内SN 2 取代组成的一锅法进行合成。发现
三乙胺是大多数底物原位环化的有效碱。有趣的是,对于几个烯酮情况,稍微修改的程序,其中将 1.0 当量的 p-TsNCl 2 缓慢加入到 2.0 当量的烯酮中进行
氨基卤化,然后用 Na 2 SO 3 
水溶液淬灭,得到粗
氮丙啶,证明其几乎是纯的通过粗 'H NMR 分析。21 个实施例实现了中等至良好的产率和出色的反立体选择性。