Organocatalytic Enantioselective Functionalization of Cyclic α-Hydroxyamides: Access to Chiral Cyclic Imides and Azapolycyclic Compounds
作者:Xiao-Qian Zhang、Yuan-Ren Ma、Yan-Kai Liu
DOI:10.1021/acs.orglett.3c03182
日期:2023.11.24
convert unfunctionalized cyclic α-hydroxyamides into chiral cyclic α-hydroxyamides by reacting with vinyl sulfones, which could be used as versatile azacyclic synthons in the following sequences: (1) as the precursors of cyclic N-acyliminium ions to prepare natural productlike chiral azapolycyclic compounds under acidic conditions and (2) to construct chiral cyclic imides bearing unilateral substituents
开发了一种高效的对映选择性烯胺催化不对称共轭加成,可通过与乙烯基砜反应将未官能化的环状 α-羟基酰胺直接转化为手性环状 α-羟基酰胺,可按以下顺序用作通用的氮杂环合成子:(1)环状N-酰亚胺离子的前驱体在酸性条件下制备天然产物类手性氮杂多环化合物;(2)通过氧化反应诱导的形式去对称化构建带有单侧取代基的手性环状酰亚胺。