Hypervalent Iodine(III)-Promoted Radical Oxidative C–H Annulation of Arylamines with α-Keto Acids
作者:Lipeng Long、Jieyan Wang、Liuqing Gu、Shiguang Yang、Liang Qiao、Guotian Luo、Zhengwang Chen
DOI:10.1021/acs.joc.1c01424
日期:2021.9.3
acids toward benzoxazin-2-ones synthesis under mild conditions was developed. This hypervalent iodine(III)-promoted process eliminated the use of a metal catalyst or additive with high levels of functional group tolerance. Hypervalent iodine(III) was both an oxidant and a radical initiator for this reaction. The synthetic utility of this method was confirmed by the synthesis of the natural product cephalandole
开发了一种新的催化剂自由基氧化 C-H 环化芳胺与 α-酮酸在温和条件下合成苯并恶嗪-2-酮的反应。这种高价碘 (III) 促进的过程消除了使用具有高水平官能团耐受性的金属催化剂或添加剂。高价碘 (III) 既是该反应的氧化剂又是自由基引发剂。该方法的合成效用通过天然产物头孢菌素 A 的合成得到证实。