Iron‐Catalyzed Aminomethyloxygenative Cyclization of Hydroxy‐α‐diazoesters with
<i>N,O</i>
‐Aminals
作者:Suchen Zou、Tianze Zhang、Siyuan Wang、Hanmin Huang
DOI:10.1002/cjoc.201900492
日期:2020.4
A new and efficient cyclization reaction has been developed to synthesize cyclic α,α‐disubstituted β‐amino esters via iron‐catalyzed intramolecular aminomethyloxygenative cyclization of diazo compounds with N,O‐aminal under mild reaction conditions. A broad range of hydroxy‐α‐diazoesters with different substituents and various N,O‐aminals were compatible with this protocol, affording the corresponding
已开发出一种新的高效环化反应,通过在温和的反应条件下,通过铁催化的重氮化合物与N,O-氨基的重氮化合物的分子内氨基甲氧基加氧环化反应,合成环状α,α-二取代的β-氨基酯。各种具有不同取代基的羟基α-重氮酸酯和各种N,O-氨基缩醛与该方案兼容,从而以高收率提供了带有五至八元氧杂环的相应α,α-二取代的β-氨基酯。