A photocatalytic difluoromethylation/cyclization of N-aryl acrylamides using difluoromethyl benzo[d]-thiazol-2-yl sulfone as the difluoromethylating reagent has been developed under mild conditions. This approach allows the synthesis a variety of useful CF₂H-containing oxindoles in good to excellent yields. In addition, the photocatalytic difluoromethylation of methacryloyl benzamides and ortho-cyanoarylacrylamides via a similar radical process was also achieved.

中文翻译：

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通过光氧化还原催化的自由基二氟甲基化和N-芳基丙烯酰胺的环化反应合成含CF ₂ H的吲哚

已经在温和的条件下开发了使用二氟甲基苯并[d]-噻唑-2-基砜作为二氟甲基化试剂的N-芳基丙烯酰胺的光催化二氟甲基化/环化反应。这种方法可以合成各种有用的含CF ₂ H的羟吲哚，收率好至极好。另外，还通过类似的自由基过程实现了甲基丙烯酰基苯甲酰胺和邻氰基芳基丙烯酰胺的光催化二氟甲基化。