Nitrosoarenes as Nitrogen Source for Generation of Sulfonamides with the Insertion of Sulfur Dioxide under Metal-Free Conditions

• 作者: Fu-Sheng He Jie Wu Jin-Biao Liu Xuefeng Wang Yanmei Lin Yunyan Kuang
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2020,（10）
• 所属期刊栏目: Concise Reports
• 页码范围: 1098-1102
• 页数: 5页
• 语种: 英文
• DOI: 10.1002/cjoc.202000053

摘要

A metal-free reaction of nitrosoarenes,aryldiazonium tetrafluoroborates,and sulfur dioxide under mild conditions is developed,giving rise to sulfonamides in moderate to good yields.This transformation proceeds efficiently at room temperature in the presence of cyclohexa-1,4-diene with a broad reaction scope.Good functional group compatibility is observed,including cyano,halo,and ester.A plausible mechanism involving a radical process with the insertion of sulfur dioxide is proposed,and cyclohexa-1,4-diene serves as the reductant during the transformation.