A palladium-catalyzed coupling reaction of aryl nonaflates, sulfur dioxide, and hydrazines
作者:Yuanyuan An、Hongguang Xia、Jie Wu
DOI:10.1039/c5ob02514a
日期:——
nonaflates, sulfurdioxide, and hydrazines is reported. This transformation proceeds in the presence of Pd(OAc)2/XantPhos, and TBAB in 1,4-dioxane at 80 °C, leading to the corresponding N-aminosulfonamides in moderate to good yields. The reaction scope has been demonstrated, and good functional tolerance is observed. A plausible mechanism is proposed through the insertion of sulfurdioxide.
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.