A Route to <i>O</i>
-Aminosulfonates and Sulfonamides through Insertion of Sulfur Dioxide and Hydrogen Atom Transfer
作者:Tong Liu、Danqing Zheng、Zhenhua Li、Jie Wu
DOI:10.1002/adsc.201700501
日期:2017.8.7
three‐component reaction of aryldiazonium tetrafluoroborates, the 1,4‐diazabicyclo[2.2.2]octane⋅bis(sulfur dioxide) adduct [DABCO⋅(SO2)2] and hydroxylamines under catalyst‐free and additive‐free conditions has been developed, providing aryl O‐aminosulfonates in good yields. Sulfonamides could also be obtained via a one‐pot process through the reaction of aryldiazonium tetrafluoroborates, DABCO⋅(SO2)2 and amines in
在无催化剂和无添加剂的条件下,四氟硼酸芳基重氮,1,4-二氮杂双环[2.2.2]辛烷·双(二氧化硫)加合物[DABCO·(SO 2)2 ]与羟胺的三组分反应已实现。开发出高收率的芳基O-氨基磺酸盐。在四氟硼酸芳基重氮鎓,DABCO⋅(SO 2)2与胺在N-羟基苯并三唑存在下的反应,也可以通过一锅法获得磺酰胺。提出了涉及二氧化硫插入和氢原子转移的机理,并得到理论计算的支持。