Merging Gold/Copper Catalysis and Copper/Photoredox Catalysis: An Approach to Alkyl Oxazoles from <i>N</i>-Propargylamides
作者:Yantao Liu、Keyong Zhu、Yuting Kong、Xiao Li、Jie Cui、Yifan Xia、Jingjing Zhao、Shaofeng Duan、Pan Li
DOI:10.1021/acs.joc.1c02668
日期:2021.12.17
through merging gold/copper catalysis and copper/photoredox catalysis. Various alkyl oxazoles are synthesized from N-propargylamides with alkyl halides in good to excellent yields with wide functional-group compatibility under blue-light irradiation. Significantly, a copper catalyst plays a dual role in this transformation: as a powerful cocatalyst to accelerate protodeauration of vinyl gold intermediates
Visible Light-Promoted Radical-Mediated Ring-Opening/Cyclization of Vinyl Benzotriazoles: An Alternative Approach to Phenanthridines
作者:Jiaqi Li、Shichong Wang、Jingjing Zhao、Pan Li
DOI:10.1021/acs.orglett.2c02249
日期:2022.8.19
tion of vinyl benzotriazoles has been developed. The method provides an efficient and practical approach to synthesize functionalized phenanthridinesfrom vinyl benzotriazoles with alkyl bromides under mild conditions. Significantly, the readily available and bench-stable vinyl benzotriazoles can serve as valuable alternative radical acceptors during the synthesis of phenanthridines.