An efficient, metal-free and highly selective protocol for the synthesis of 2-aminobiphenyls via visible-light-mediated arylation of anilines using aryl diazonium salts (Gomberg-Bachmann reaction) has been reported. The reaction is an example of photoredox catalysed direct C(sp²)–H arylation of anilines using eosin Y as an organophotoredox catalyst. The presented visible-light-mediated environmentally sustainable approach has the potential to earn a decent position among the classical and contemporary methods for the synthesis of aminobiaryls.

中文翻译：

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可见光介导的Gomberg-Bachmann反应：2-氨基联苯的有效光催化方法

已经报道了使用芳基重氮盐（Gomberg-Bachmann反应）通过可见光介导的苯胺芳基化合成2-氨基联苯的有效，无金属且高度选择性的方案。该反应是使用曙红Y作为有机光氧化还原催化剂，光氧化还原催化苯胺直接C（sp ²）-H芳基化的一个例子。提出的可见光介导的环境可持续方法在合成氨基联芳基的经典方法和当代方法中有可能获得不错的地位。