An efficient and convenient method to synthesize 6-oxyalkylated 1,2,4-triazine-3,5(2H, 4H)-diones has been developed via visible-light-induced cross-dehydrogenative coupling reaction between 1,2,4-triazine-3,5(2H, 4H)-diones and ethers with a wide range of functional group tolerance. The present transformation employs the cheap and low-toxic 2-tert-butylanthraquinone as a metal-free photocatalyst and air as a green oxidant at room temperature. Moreover, this reaction can also be driven by sunlight as a clean energy resource. The synthetic utility of this method is further demonstrated by gram-scale reaction and application in the preparation of key intermediates of bioactive molecules.

中文翻译：

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1,2,4-Triazine-3,5(2H, 4H)-二酮与醚通过氧化交叉脱氢偶联的可见光诱导氧烷基化

1,2,4-3,5 (2 H , 4 H )-二酮类化合物通过可见光诱导的1,2,4之间的交叉脱氢偶联反应合成6-氧烷基化1,2,4-三嗪-3,5(2 H , 4 H )-二酮类化合物-triazine-3,5(2 H , 4 H )-二酮和醚，具有广泛的官能团耐受性。本次改造采用廉价低毒的二叔-丁基蒽醌在室温下作为无金属光催化剂和空气作为绿色氧化剂。此外，这种反应也可以由作为清洁能源的阳光驱动。该方法的合成效用通过克级反应和在生物活性分子关键中间体制备中的应用得到进一步证明。