A visible-light-mediated decarboxylative cyclization of N-acyloxylphthalimides with vinyl azides has been developed under metal-free conditions. This protocol features mild conditions, a broad substrate scope, and an excellent functional group tolerance, thus providing a facile and efficient access to substituted phenanthridines. Control experiments revealed that the reaction proceeded via a radical process.

中文翻译：

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N-酰氧基邻苯二甲酰亚胺对乙烯基叠氮化物的无金属，可见光促进的脱羧自由基环化反应

N-酰氧基邻苯二甲酰亚胺与乙烯基叠氮化物的可见光介导的脱羧环化反应已在无金属条件下进行。该方案具有温和的条件，广泛的底物范围和出色的官能团耐受性，因此可轻松高效地获得取代的菲啶。对照实验表明，反应是通过自由基过程进行的。