A cobalt/copper-cocatalyzed facile synthesis of imidazo[1,2-a:3,4-a′]dipyridiniums from 2H-[1,2′-bipyridin]-2-ones and 2-bromoacetophenones is presented. This strategy provides an alternative to the imidazo[1,2-a:3,4-a′]dipyridinium synthesis by employing readily available substrates and a simple procedure, which would render this method potentially useful in organic synthesis.

中文翻译：

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2 H- [1,2'-联吡啶] -2-酮和2-溴苯乙酮的钴/铜共催化合成咪唑并[1,2- a：3,4- a ']二吡啶鎓

提出了从2 H- [1,2'-联吡啶] -2-酮和2-溴苯乙酮中钴/铜共催化的咪唑并[1,2- a：3,4- a ']二吡啶鎓的简便合成方法。通过采用容易获得的底物和简单的方法，该策略提供了咪唑并[1,2- a：3,4- a ']双吡啶鎓合成的替代方法，这将使该方法可能在有机合成中有用。