Mild Metal-Free Sequential Dual Oxidative Amination of C(sp<sup>3</sup>)–H bonds: Efficient Synthesis of Imidazo[1,5-<i>a</i>]pyridines
作者:Yizhe Yan、Yonghui Zhang、Zhenggen Zha、Zhiyong Wang
DOI:10.1021/ol4008487
日期:2013.5.3
A metal-free sequential dual oxidative amination of C(sp3)–H bonds under ambient conditions was the first developed, affording imidazo[1,5-a]pyridines in good to excellent yields. The reaction was involved in two oxidative C–N couplings and one oxidative dehydrogenation process with six hydrogen atoms removed.
首次开发了在环境条件下无金属的C(sp 3)-H键的顺序双氧化胺化反应,可提供咪唑并[1,5- a ]吡啶,并具有良好或优异的收率。该反应涉及两个氧化C–N偶联和一个氧化脱氢过程,其中去除了六个氢原子。
A simple and efficient approach has been developed for the synthesis of imidazo[1,5-a]pyridines using the elemental sulfur mediated sequential dual oxidative Csp3–H amination of 2-pyridyl acetates and amines under metal- and peroxide-free conditions. Broad substrate scope, operational simplicity and gram-scale ability make this chemistry very practical.
已经开发了一种简单有效的方法,用于在无金属和无过氧化物的条件下,使用元素硫介导的乙酸2-吡啶酯和胺的连续双氧化Csp 3 -H胺化来合成咪唑并[1,5- a ]吡啶。广泛的底物范围,操作简便和克级能力使这种化学非常实用。