1-n-Butyl-3-methylimidazolium cyanide ([bmim]CN), in the presence of [bmim]Br has been prepared and used for the first time as the medium as well as reagent for the synthesis of aromatic cyanodienones from the corresponding triarylpyrylium perchlorates by cyanide-halide exchange. The [bmim]CN having a reactive anion, accelerated reaction technique without external solvent renders the whole synthesis into a truly ecofriendly protocol. The products is isolated without aqueous work-up in high purity and excellent yield.

中文翻译：

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氰卤化物交换辅助芳香氰二烯酮衍生物的合理设计与快速合成

1-n-Butyl-3-methylimidazolium cyanide ([bmim]CN), 在 [bmim]Br 存在下首次制备并用作介质和试剂，用于从相应的合成芳香氰二烯酮三芳基吡喃高氯酸盐通过氰化物-卤化物交换。[bmim] CN 具有反应性阴离子，无需外部溶剂的加速反应技术使整个合成成为真正环保的协议。无需水后处理即可以高纯度和极好的收率分离产物。