Intramolecular functionalization of C(sp 3 ) H bonds adjacent to an amide nitrogen atom: Metal-free synthesis of 2-hydroxy-benzoxazinone derivatives
作者:Biao Gao、Kaili Chen、Xiaoling Bi、Jinxin Wang
DOI:10.1016/j.tet.2017.09.001
日期:2017.12
An intramolecularC(sp3)H bond functionalization adjacent to an amide nitrogen atom was successfully developed for synthesis of 2-hydroxybenzoxazinone derivatives under environment-friendly conditions. The method featured no metal catalyst, broad substrate scopes and high yields. Besides, a radical mechanism was proposed in the reaction process. Additionally, most of target compounds exhibited potent