Electrochemical chlorination and bromination of electron-deficient C H bonds in quinones, coumarins, quinoxalines and 1,3-diketones
作者:Dan Yu、Ruixue Ji、Zhihui Sun、Wenjie Li、Zhong-Quan Liu
DOI:10.1016/j.tetlet.2021.153514
日期:2021.12
The electrochemistry-promoted chlorination and bromination of electron-deficient CH bonds was developed, using quinones, coumarins, quinoxalines and 1,3-diketones. This protocol features readily available and safe halogen sources (hydrochloric acid and KBr), high site-selectivity and mild reaction conditions. It could provide an efficient access to a series of chlorinated and brominated quinones, coumarins
使用醌、香豆素、喹喔啉和 1,3-二酮,开发了电化学促进的缺电子 CH键的氯化和溴化。该协议具有易于获得且安全的卤素源(盐酸和 KBr)、高位点选择性和温和的反应条件。它可以有效地获取一系列氯化和溴化醌、香豆素、喹喔啉和 1,3-二酮。