Oxidize Amines to Nitrile Oxides: One Type of Amine Oxidation and Its Application to Directly Construct Isoxazoles and Isoxazolines
作者:Xiao-Wei Zhang、Xiao-Lin He、Nan Yan、Hong-Xing Zheng、Xiang-Guo Hu
DOI:10.1021/acs.joc.0c02281
日期:2020.12.4
A facile oxidative heterocyclization of commercially available amines and tert-butyl nitrite with alkynes or alkenes leading to isoxazoles or isoxazolines is described. The unprecedented strategy of the oxidation of an amine directly to a nitrile oxide was used in this cyclization process. This reaction is highly efficient, regiospecific, operationally simple, mild, and tolerant of a variety of functional
描述了可商购的胺和亚硝酸叔丁酯与炔或烯烃的容易的氧化性杂环化,其导致异恶唑或异恶唑啉。在这种环化过程中使用了前所未有的将胺直接氧化为一氧化氮的策略。该反应是高效的,区域特异性的,操作简单的,温和的,并且耐受多种官能团。对照实验为这种新型的氧化环化反应提供了一种一氧化氮中间体机制。此外,实现了对生物活性分子骨架的合成应用和药物的后期修饰。