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中文摘要：
在离子液体[Bmim]BF4介质中，通过芳醛与活泼亚甲基化合物的Knoevenagel缩合反应合成了一系列α,β-不饱和化合物．反应温度低（80℃），反应时间短（2—6h），收率较高（58％-95％）．产物经^1HNMR、Mass和IR进行了结构表征．
英文摘要：
Knoevenagel condensation of aromatic aldehydes with methylenes proceeded very efficiently in ionic liquid. The reaction can be carried out in good yield （58% -95% ） under lower temperature （80 ℃ ） and in a short time （2 -6 h）. The structures of products were characterized by 1HNMR,Mass and IR spectra.
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