Iodine-Catalyzed Oxidative Aromatization: A Metal-Free Concise Approach to<i>meta</i>-Substituted Phenols from Cyclohex-2-enones
作者:Shi-Ke Wang、Ming-Tao Chen、Da-Yuan Zhao、Xia You、Qun-Li Luo
DOI:10.1002/adsc.201600930
日期:2016.12.22
A metal‐free approach to meta‐substituted phenols from cyclohex‐2‐enone via catalytic oxidative aromatization has been developed. The transformations are initiated with a catalytic amount of molecular iodine as the direct oxidant, while dimethyl sulfoxide is employed as the terminal oxidant. This practical approach is capable of avoiding the use of metal promoters and costly reagents, the lengthy synthesis
Copper-Catalyzed Synthesis of Substituted Primary Arylamines from Cyclohexenone Oxime Esters
作者:Yong-Jie Kuang、Yan Yu、Min Zhou、Yu-Cheng Yin、Tian Cai、Qun-Li Luo
DOI:10.1021/acs.orglett.3c03501
日期:2023.12.8
A novel protocol has been developed for the Cu-catalyzed synthesis of primary arylamines with meta-substituents using cyclohexenone oxime esters. Mechanistic insights suggest that the reaction proceeds via an intermolecular 1,5-H hydrogen atom transfer of an imine radical intermediate. This approach features high efficiency, a readily available catalyst system, and broad functional group tolerance