A new heterogeneous catalytic diazotization and subsequent coupling of diazonium salts with aromatics for the synthesis of biaryls is described. The method involves the solid phase diazotization of anilines and the successive C–C bond formation of the diazonium salt with alkylbenzenes. Excellent yields were obtained for a broad range of anilines and aromatic nucleophiles. The reaction was carried out using K-10 montmorillonite as an acid catalyst and medium as well. The high selectivity, metal-free, recyclable catalyst, easy work up, and absence of harmful waste make the process a sustainable alternative to available methods.

中文翻译：

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K-10蒙脱石催化的固相重氮化：重氮盐与芳烃对联芳基的环境友好偶联

描述了一种新的非均相催化重氮化反应，随后将重氮盐与芳族化合物偶联以合成联芳基。该方法涉及苯胺的固相重氮化和重氮盐与烷基苯的连续C–C键形成。对于广泛的苯胺和芳族亲核试剂，均获得了优异的收率。使用K-10蒙脱土作为酸催化剂和介质也进行反应。高选择性，无金属，可循环使用的催化剂，易于处理且无有害废物的存在使该方法成为可用方法的可持续替代方案。