Visible-Light Photoredox-Catalyzed Aminosulfonylation of Diaryliodonium Salts with Sulfur Dioxide and Hydrazines
作者:Nai-Wei Liu、Shuai Liang、Georg Manolikakes
DOI:10.1002/adsc.201601341
日期:2017.4.17
three‐component synthesis of N‐aminosulfonamides starting from diaryliodonium salts, hydrazines and sulfurdioxide is reported. This reaction proceeds under mild conditions at room temperature and is driven by visible light. A simple bisulfite salt can be used as a readily available and easy‐to‐handle sulfurdioxide source. Mechanistic studies support a catalytic photoredox pathway with the diaryliodonium
Metal-Free Aminosulfonylation of Aryldiazonium Tetrafluoroborates with DABCO⋅(SO<sub>2</sub>)<sub>2</sub>and Hydrazines
作者:Danqing Zheng、Yuanyuan An、Zhenhua Li、Jie Wu
DOI:10.1002/anie.201309851
日期:2014.2.24
The coupling of aryldiazoniumtetrafluoroborates, DABCO⋅(SO2)2, and hydrazines under metal‐free conditions leads to the formation of aryl N‐aminosulfonamides. The reaction proceeds smoothly at room temperature and shows broad functional‐group tolerance. A radical process is proposed for this transformation.
Synthesis of 1-(2,3-dihydrobenzofuran-3-yl)-methanesulfonohydrazides through insertion of sulfur dioxide
作者:Yuanyuan An、Danqing Zheng、Jie Wu
DOI:10.1039/c4cc05401f
日期:——
A three-component reaction of 2-(allyloxy)anilines, sulfur dioxide and hydrazines under mild conditions is developed, which gives rise to 1-(2,3-dihydrobenzofuran-3-yl)-methanesulfonohydrazides in good yields. This radical process involves an intramolecular 5-exo-cyclization and insertion of sulfur dioxide.