Phosphonation of quinoxalines and quinoxalin-2(1H)-ones utilizing aerobic oxygen as green oxidant under visible light conditions at room temperature has been described. Both quinoxalines and quinoxalin-2(1H)-ones are compatible with alkyl or aryl phosphonates and provided good yields of products through regioselective C–P bond formation under base/ligand-free conditions. Competitive experiments showed quinoxalin-2(1H)-ones are more reactive than quinoxalines under the present conditions, and the control experiments revealed the present transformation proceeds through a radical mechanism.

中文翻译：

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无氧条件下可见光诱导的喹喔啉和喹喔啉-2（1H）-one的膦化反应

已经描述了在室温下在可见光条件下利用好氧作为绿色氧化剂对喹喔啉和喹喔啉-2（1 H）-进行膦酸酯化。喹喔啉和喹喔啉-2（1 H）-one与烷基或芳基膦酸酯相容，并且在无碱/无配体的条件下通过区域选择性C-P键的形成提供了良好的产物收率。竞争性实验表明，在当前条件下，喹喔啉-2（1 H）-酮比喹喔啉具有更高的反应活性，而对照实验表明，目前的转化过程是通过自由基机理进行的。