Bi(OTf)
<sub>3</sub>
‐catalyed One‐pot Synthesis of α‐Halo‐β‐amino Ketones and Acyl Aziridines from 3‐Aryl Propargyl Alcohols
作者:Qinglin Zhang、Yongbin Duan、Huifeng Guo、Hong Yang、Jiulong Zhai、Tiantian Li、Zhihai Wang、Xiaolei Lu、Yan Wang、Yan Yin
DOI:10.1002/asia.202100368
日期:2021.7.5
variety of α-halo-β-amino ketones. The key intermediates, β-amino ketones, were obtained through tandem Meyer-Schuster rearrangement reaction of propargyl alcohols and intermolecular Michael addition of α, β-unsaturated ketones and sulfonamide. Then the in situ generated α-halo-β-amino ketones underwent the base-promoted intramolecular cyclization to give diverse acyl aziridines in a one-pot fashion. These
首次研究了Bi(OTf) 3催化的3-芳基炔丙醇与磺酰胺和卤源的反应,为合成多种α-卤代-β-氨基酮提供了一条简便的途径。关键中间体β-氨基酮是通过炔丙醇的串联Meyer-Schuster重排反应和α,β-不饱和酮和磺酰胺的分子间迈克尔加成获得的。然后,原位生成的 α-卤代-β-氨基酮经过碱基促进的分子内环化,以一锅法得到多种酰基氮丙啶。这些转换在大规模上是可靠的。高产率和方便的实验操作使其成为构建α-卤代-β-氨基酮和酰基氮丙啶衍生物的一种有价值的方法。