超声波法合成丙偶姻的研究

Synthesis of propionoin by ultrasonic wave

丙酸乙酯与金属钠还原缩合 ,采用超声波加速反应合成丙偶姻。结果表明 ,采用超声波法 ,反应时间由普通方法的 6h缩短为 3.5h ,收率为 5 5 .8%,高于普通方法的 5 1.6 %。

A modified method for the synthesis of propionoin from ethyl propionate and sodium by ultrasonic wave was studied.The results indicated that the method of ultrasonic wave accelerated reactions compared with conventional method.It reduced the time of the reduction and condensation of ethyl propionate and sodium by 2.5h and increased the yield from 51.5% to 55.8%.