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
Aminosulfonylation of aromatic amines, sulfur dioxide and hydrazines
作者:Danqing Zheng、Ying Li、Yuanyuan An、Jie Wu
DOI:10.1039/c4cc03032j
日期:——
A facile route to aryl N-aminosulfonamides under mild conditions is provided. The reaction of aromatic amines (including heteroaromatic amines), sulfurdioxide, and hydrazines proceeds efficiently with good functional group tolerance. The in situ generated diazonium ion is involved in the aminosulfonylation process.
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.
A four-component reaction of aryldiazonium tetrafluoroborates, sulfur dioxide, 1,2-dibromoethane, and hydrazines
作者:Danqing Zheng、Yunyan Kuang、Jie Wu
DOI:10.1039/c5ob01765c
日期:——
A four-component reaction of aryldiazonium tetrafluoroborates, sulfurdioxide, 1,2-dibromoethane, and hydrazines under metal-free conditions is described, providing a novel and efficient approach to 2-arylsulfonyl hydrazones. This transformation proceeds smoothly via insertion of sulfurdioxide under mild conditions with good functional group tolerance.