A multi-componentreaction of aldehyde, malononitrile, and 5-amino-3-methyl-1-phenylpyrazole was carried out smoothly in [bmim][BF4] without any added catalyst. Through this reaction, pyrazolo[3,4-b]pyridines or substituted malononitrile derivatives were obtained conveniently and controllably at different temperatures. The ionic liquid used can be easily recovered and efficiently reused for at least
醛,丙二腈和5-氨基-3-甲基-1-苯基吡唑的多组分反应在[bmim] [BF 4 ]中平稳进行,无需添加任何催化剂。通过该反应,可方便地,可控制地在不同温度下获得吡唑并[3,4- b ]吡啶或取代的丙二腈衍生物。所使用的离子液体可轻松回收并有效重复使用至少五次。