Visible light promoted intramolecular cross dehydrogenative coupling of 1-aminoalkyl-2-naphthols to 1,3-oxazines is developed. Green LED lamp was used as the light source and eosin Y functions as photoredox catalyst. The reaction was carried out in the absence of transition-metal photoredox catalysts and additional additives. Aerial oxygen was used as the terminal oxidant. The method offers clean and efficient synthesis of these important classes of heterocycles.

中文翻译：

---

1,3-恶嗪的可见光促进无金属分子内交叉脱氢偶联方法

开发了可见光促进的1-氨基烷基-2-萘酚与1，3-恶嗪的分子内交叉脱氢偶联。绿色LED灯用作光源，曙红Y用作光氧化还原催化剂。该反应在不存在过渡金属光氧化还原催化剂和其他添加剂的情况下进行。空气中的氧气被用作末端氧化剂。该方法提供了这些重要类别的杂环的干净有效的合成方法。