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.
Copper-catalyzed trifluoromethylation of N-arylacrylamides “on water” at room temperature
作者:Fang Yang、Piyatida Klumphu、Yong-Min Liang、Bruce H. Lipshutz
DOI:10.1039/c3cc48131j
日期:——
A copper-catalyzed intramolecular trifluoromethylation of arylacrylamides leads to oxindole derivatives, effected with stable and inexpensive Langlois' reagent (CF3SO2Na). These reactions proceed via a radical process in water at room temperature. The aqueous solution can be recycled.