An efficient organo-photocatalytic method for the synthesis of 6-β-disubstituted phenanthridines has been developed. The reaction documents unprecedented generation of enolate vinyl radicals from corresponding diazo compounds in the presence of photocatalyst Rh-6G. Subsequent trapping of these radical intermediates by o-aryl vinyl azides followed by intramolecular cyclization affords the final products in excellent yields and regioselectivity.

中文翻译：

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α-重氮-β-酮化合物和乙烯基叠氮化物有机光催化合成 6-β-二取代菲啶

开发了一种有效的有机光催化合成 6-β-二取代菲啶的方法。该反应记录了在光催化剂 Rh-6G 存在下，从相应的重氮化合物中前所未有地产生烯醇化乙烯基自由基。随后用邻芳基乙烯基叠氮化物捕获这些自由基中间体，然后进行分子内环化，以优异的产率和区域选择性提供最终产物。