微波辐照合成乙酸芳樟酯的研究

Study on Synthesis of Linalyl Acetate under Microwave Irradiation

采用微波间歇辐照方法研究了微波辐照下乙酸芳樟酯的合成,确定的最适工艺条件为:催化剂K2CO3用量为原料质量的4%、微波功率100 W、反应时间5 h、酐醇物质的量之比2.5∶1。最适工艺条件下,芳樟醇转化率为76.71%、乙酸芳樟酯产率为61.48%。该工艺反应时间短、产率高且催化剂成本低。

The technology of synthesizing linalyl acetate had been studied by using the method of interval microwave irradiation. The results showed that the optimized conditions were as follows ： the ratio of acetic anhydride to linalool was 2.5 ： 1,4 % K2CO3 was used as catalyst （based on linalool weight） under 100 W microwave, and the irradiation time was 5 h. The conversion of linalool was 76.71% and the yield of linalyl acetate was 61.48 % under optimum conditions. Compared with normal methods, the technology needs shorter time and cheaper catalyst to achieve higher productivity of linalyl acetate.