Using visible light as energy to form free radicals has important synthetic value. A novel and efficient visible-light-mediated strategy has been developed for the generation of thiobenzene radicals through cerium-catalyzed activation of the disulfides. Through this photochemical reaction, various 3-sulfenylated quinoxalin-2(1H)-ones can be conveniently obtained in good yields with good functional group tolerance. Our transformation provides an alternative that allows rapid access to various C3 sulfenylated quinoxalin-2(1H)-ones in a sustainable and practical manner.

中文翻译：

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通过可持续的铈催化，可见光诱导喹喔啉-2(1H)-酮与二硫化物的 C-H 磺基化

利用可见光作为能量形成自由基具有重要的合成价值。一种新颖且有效的可见光介导策略已被开发出来，用于通过二硫化物的铈催化活化来产生苯硫基自由基。通过该光化学反应，可以方便地以良好的收率获得具有良好官能团耐受性的各种3-磺基化喹喔啉-2(1H ) -酮。我们的转化提供了一种替代方案，可以以可持续和实用的方式快速获得各种 C3 磺基化喹喔啉-2(1 H )-酮。