Transition Metal-Free Intermolecular C(sp<sup>2</sup>)–H Direct Amination of Furanones via a Redox Pathway
作者:Qiang Wei、Junfeng Wang、Eman A. Akam、Dawei Yin、Zemei Ge、Tieming Cheng、Xin Wang、Anna-Liisa Brownell、Runtao Li
DOI:10.1021/acs.joc.8b02760
日期:2019.2.1
A direct C(sp2)–H amination of 2-furanones under metal-free conditions was realized. This unprecedented intermolecular C–H to C–N conversion provides rapid access to 4-amino-furanone derivatives and novel aza-heterocycle fused furanone skeletons. A redox mechanism based on a double-Michael-addition intermediate INT2 is proposed and detected by spectrometry.
在无金属条件下实现了2-呋喃酮的直接C(sp 2)-H胺化反应。前所未有的分子间C–H到C–N的转化为快速获得4-氨基呋喃酮衍生物和新颖的氮杂杂环稠合呋喃酮骨架提供了便利。提出了基于双迈克尔加成中间体INT2的氧化还原机理,并通过光谱法对其进行了检测。