A visible-light-induced and iron-catalyzed oxidative radical addition/cyclization cascade reaction of N-(o-cyanoaryl)acrylamides with dimethyl sulfoxide has been developed. The method exhibits a wide substrate scope and an excellent functional-group tolerance, thus providing an efficient and convenient access to a variety of methylated quinoline-2,4-diones.

中文翻译：

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铁催化串联自由基加成/环化：高效获得甲基化喹啉-2,4-二酮

已开发出 N-（邻氰基芳基）丙烯酰胺与二甲基亚砜的可见光诱导和铁催化氧化自由基加成/环化级联反应。该方法具有广泛的底物范围和优异的官能团耐受性，从而为获取各种甲基化喹啉-2,4-二酮提供了高效便捷的途径。