A photocatalytic reaction of N‐(2‐vinylphenyl)amides, DABCO⋅(SO₂)₂ and arenediazonium tetrafluoroborates for the synthesis of 4‐((arylsulfonyl)methyl)‐4H‐benzo[d][1,3]oxazines under mild conditions is reported. This synthetic approach is enabled by merging photoredox catalysis and insertion of sulfur dioxide via a radical process. The specific role of photoredox catalysis in this transformation is supported by mechanistic investigations and theoretical calculations.

中文翻译：

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合并光氧化还原催化和二氧化硫的插入合成磺化苯并[d] [1,3]恶嗪

N-（2-乙烯基苯基）酰胺，DABCO⋅（SO ₂）₂和苯_二氮杂四氟硼酸酯的光催化反应在以下条件下合成4-（（芳基磺酰基）甲基）-4- H-苯并[ d ] [1,3]恶嗪据报道情况较温和。通过自由基反应将光氧化还原催化作用与二氧化硫的插入相结合，可以实现这种合成方法。机理研究和理论计算支持了光氧化还原催化在这种转变中的特定作用。