Synthesis of Oxindoles through Silver-Catalyzed Trifluoromethylation-, Difluoromethylation- and Arylsulfonylation-Cyclization Reaction of<i>N</i>-Arylacrylamides
作者:Jidan Liu、Shaobo Zhuang、Qingwen Gui、Xiang Chen、Zhiyong Yang、Ze Tan
DOI:10.1002/ejoc.201400087
日期:2014.5
Efficient synthesis of trifluoromethyl and difluoromethyl-substituted oxindoles was achieved by reacting Langlois reagent or Baran reagent with N-arylacrylamides. However, the reaction of aryl sulfinic acid sodium salts with N-arylacrylamides did not give the desulfinative products, instead, aryl sulfonated products were produced.
通过 Langlois 试剂或 Baran 试剂与 N-芳基丙烯酰胺反应,实现了三氟甲基和二氟甲基取代的羟吲哚的有效合成。然而,芳基亚磺酸钠盐与N-芳基丙烯酰胺的反应没有得到脱亚磺化产物,而是产生了芳基磺化产物。
Silver-Mediated Radical Trifluoromethylarylation of Activated Alkenes for the Synthesis of Oxindoles Bearing a CF3 Group
作者:Fu-Xue Chen、Yao-Feng Wang、Jiashen Qiu、Dejie Kong
DOI:10.1055/s-0033-1341272
日期:——
A radical trifluoromethylarylation of N-arylacrylamides with in situ generated [AgCF3] species from Me3SiCF3 and AgF in DMF is established through a tandem radical addition and C-H activation pathway. It provided a concise method to prepare 21 examples of CF3-containing oxindoles within four hours.