1-n-Butyl-3-methylimidazolium cyanide ([bmim]CN), in the presence of [bmim]Br has been prepared and used for thefirst 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, is an accelerated reaction technique without external solvent and renders the whole synthesis into a truly eco-friendly protocol. The products can be 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 存在下已被制备并首次用作从相应的三芳基吡喃合成芳香氰二烯酮的介质和试剂通过氰化物-卤化物交换产生高氯酸盐。[bmim]CN 具有反应性阴离子，是一种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优异的收率分离产物。