磷酸酯盐离子液体的微波辅助合成及其在Knoevenagel反应中的应用  

Microwave-Assisted Synthesis of Ionic Liquids of Phosphate and Application in Knoevenagel Reaction

作　　者：卢向军[1] 窦辉[1] 戴耀东[1] 陈达[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《南京航空航天大学学报》2009年第3期414-417,共4页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：微波辐射下以磷酸三烷酯和N-烷基咪唑为原料合成了6种磷酸酯盐离子液体，结构经。HNMR和ESIMS确证，其中两种离子液体未见报道。与传统加热法比较，微波辅助下反应时间大大缩短，产率更高。测定了离子液体室温下的电导率、粘度和pH值。6种离子液体均显示出温和的碱性，以其作Lewis碱催化剂催化苯甲醛和氰基乙酸乙酯的Knoevenagel缩合反应，均在室温下，5～10min产率即达90％左右，表现出很高的催化活性。离子液体经过简单的处理可实现回收利用。Six ionic liquids of phosphate are synthesized under microwave irradiation and the structures are confirmed based on the spectra of 1H NMR and ESIMS. The reaction time is reduced compared with the conventional method. The viscosity, conductivity and pH value of ionic liquids are measured. Six ionic liquids of the phosphate show the mild basic property according to pH value. The capacity to cat- alyze the Knoevenagel condensation reaction as Lewis base is determined with benzaldehyde and ethyl- cyanoacetate at the room temperature, the reaction proceeds about 90% at 5-10 rain. And the ionic liq- uids can be recycled.

关 键 词：微波 磷酸酯盐 离子液体 LEWIS碱 KNOEVENAGEL反应 

分 类 号：O63[理学—高分子化学]