超声辐射下水介质中KF-Al_2O_3催化合成2-呋喃亚甲基氰乙酸乙酯

Synthesis of 2-furylidene Ethyl Cyanoacetate Using KF-Al_2O_3 as a Catalyst under Ultrasonic Irradiation in Aqueous

超声波辐射下以水为溶剂,氧化铝固载氟化钾催化合成了2-呋喃亚甲基氰乙酸乙酯.最佳反应条件:n(呋喃甲醛)∶n(氰乙酸乙酯)=1∶1,催化剂用量为1.0 g,反应温度35℃时反应5 min,产率可达97.8%.

2-Furylidene ethyl cyanoacetate was directly synthesized using KF-Al2O3 as a catalyst under ultrasonic irradiation in Aqueous.The optimum conditions were：n（furfural）∶n（ethyl cyanoacetate）= 1∶1,the quality of catalyst was 1.0 g.They reacted at temperature 35 ℃ under ultrasonic for 5 min and the yield was up to 97.8%.