Copper-Catalyzed Arylsulfonylation and Cyclizative Carbonation of <i>N</i>-(Arylsulfonyl)acrylamides Involving Desulfonative Arrangement toward Sulfonated Oxindoles
作者:Hepan Wang、Song Sun、Jiang Cheng
DOI:10.1021/acs.orglett.7b02827
日期:2017.11.3
N-(arylsulfonyl)acrylamides, DABSO, and aryldiazonium tetrafluoroborates. This transformation is triggered by the formation of arylsulfonyl radicals in situ from the reaction of aryldiazonium tetrafluoroborates and DABSO. Afterward, the sequential radical addition, radical cyclization, and desulfonylative 1,4-aryl migration take place to provide the final product by the formation of four new bonds in one pot. This
通过N-(芳基磺酰基)丙烯酰胺,DABSO和芳基重氮四氟硼酸酯的Cu(OAc)2催化的三组分反应可得到磺化的吲哚。该转变是由四氟硼酸芳基重氮鎓与DABSO反应原位形成芳基磺酰基引发的。之后,依次进行自由基加成,自由基环化和去磺酰基化的1,4-芳基迁移,以通过在一个罐中形成四个新键来提供最终产物。此过程显示出良好的功能组耐受性。