Catalytic amounts of TBHP (15 mol%) promoted tribromomethylation of activated alkenes has been developed. This method provided a metal-free aerobic way to construct tribromomethylated 2-oxindoles from the reaction of readily available N-arylacrylamides with CBr₄via a proposed tandem radical cyclization process. Air is used as an efficient terminal oxidant in this transformation. The formation of 1,1-dibromoolefin derivatives was also realized at higher temperature under neat conditions.

中文翻译：

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串联自由基环化以构建多溴化2-氧吲哚

已经开发了催化量的TBHP（15mol％）促进的活化烯烃的三溴甲基化。该方法提供了一种无金属的好氧方法，该方法可通过拟议的串联自由基环化方法，从容易获得的N-芳基丙烯酰胺与CBr ₄的反应中构建三溴甲基化的2-氧吲哚。在此转化过程中，空气被用作有效的终端氧化剂。1，1-二溴烯烃衍生物的形成也可以在较高温度和纯净条件下实现。