A non-catalytic thermal as well as visible-light photoredox catalyzed approach towards 6-alkylsulfonylmethyl phenanthridines is demonstrated. The strategy involves the exposure of biaryl vinyl azides to the in-situ generated alkyl sulfonyl radicals, accessed from 4-alkyl substituted Hanztsch esters in the presence of an SO₂ surrogate like DABSO/K₂S₂O₅.

中文翻译：

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热与可见光光氧化还原催化级联自由基环化涉及 SO2 固定以获得 6-烷基磺酰甲基菲啶

展示了一种针对 6-烷基磺酰基甲基菲啶的非催化热以及可见光光氧化还原催化方法。该策略涉及将联芳基乙烯基叠氮化物暴露于原位生成的烷基磺酰基自由基，该烷基磺酰基自由基是在SO ₂替代物（如DABSO/K ₂ S ₂ O ₅）存在下从4-烷基取代的Hanztsch酯获得的。