The progress of efficient and sustainable approaches for decarboxylative coupling reactions is synthetically appealing due to the structural diversity, lack of toxicity, and widespread commercial accessibility of carboxylic acids. However, the decarboxylation reaction still encounters challenges related to the utilization of oxidants, catalysts, and prefunctionalization conditions. We report herein a mild method that facilitates direct electron transfer between alkyl carboxylic acids and excited-state substrates for C–H alkylation of quinoxalin-2(1H)-ones without the involvement of any catalyst or additive.

中文翻译：

---

喹喔啉-2(1H)-酮与烷基羧酸之间的光诱导直接电子转移用于 C-H 烷基化

由于羧酸的结构多样性、无毒性和广泛的商业可及性，有效和可持续的脱羧偶联反应方法的进展具有综合吸引力。然而，脱羧反应仍然遇到与氧化剂、催化剂和预官能化条件的利用相关的挑战。我们在此报告了一种温和的方法，该方法促进烷基羧酸和激发态底物之间的直接电子转移，用于喹喔啉-2(1 H )-酮的C-H烷基化，而不涉及任何催化剂或添加剂。