Interweaving Visible‐Light and Iron Catalysis for Nitrene Formation and Transformation with Dioxazolones
作者:Jing‐Jing Tang、Xiaoqiang Yu、Yi Wang、Yoshinori Yamamoto、Ming Bao
DOI:10.1002/anie.202016234
日期:2021.7.19
transfer reactions with dioxazolones for intermolecular C(sp3)-N, N=S, and N=P bond formation are described. These reactions occur with exogenous-ligand-free process and feature satisfactory to excellent yields (up to 99 %), an ample substrate scope (109 examples) under mild reaction conditions. In contrast to intramolecular C−H amidations strategies, an intermolecular regioselective C−H amidation via
本文描述了可见光驱动的铁催化氮烯转移反应与二恶唑酮分子间 C(sp 3 )-N、N=S 和 N=P 键的形成。这些反应在无外源配体的过程中发生,并且具有令人满意的优异产率(高达 99%),在温和的反应条件下具有足够的底物范围(109 个例子)。与分子内 C−H 酰胺化策略相反,设计了通过可见光诱导的氮烯转移反应的分子间区域选择性 C−H 酰胺化。机理研究表明该反应通过自由基途径进行。计算研究表明,二恶唑酮的脱羧取决于通过可见光照射将六重态二恶唑酮结合铁物质转化为四重旋态。