Straightforward Sulfonamidation
<i>via</i>
<scp>Metabisulfite‐Mediated</scp>
Cross Coupling of Nitroarenes and Boronic Acids under
<scp>Transition‐Metal‐Free</scp>
Conditions
<sup>†</sup>
作者:Yaping Li、Ming Wang、Xuefeng Jiang
DOI:10.1002/cjoc.202000198
日期:2020.12
A straightforward multicomponent sulfonamidation of nitroarenes, sodium metabisulfite and boronic acids was established under transition‐metal‐free conditions to access diverse sulfonamides from readily available and low‐cost materials modularly. Inorganic salt sodium metabisulfite not only served as a sulfur dioxide source, but also played a key role for both activator and reductant during sulfonamidation
在无过渡金属的条件下,建立了硝基芳烃,偏亚硫酸氢钠和硼酸的直接多组分磺酰胺化方法,以模块化方式从易于获得的低成本材料中获得各种磺酰胺。无机盐焦亚硫酸钠不仅用作二氧化硫源,而且在磺酰胺化过程中对活化剂和还原剂均起着关键作用。值得注意的是,在这种转化中,深入研究了具有多个杂原子和敏感官能团的天然存在的生物分子和药物,共同提供了多种磺酰胺。进一步的机理研究表明,亚硝基芳烃是关键的中间体,硼酸的活化是转化过程中决定速率的步骤。