微波促进硫酸铁铵催化合成环己酮乙二醇缩酮

Synthesis of cyclohexanone glycol ketal catalyzed by ammonium ferric sulfate under microwave irradiation

用十二水硫酸铁铵作催化剂,微波辐射催化合成环己酮乙二醇缩酮。讨论了酮醇物质的量比、催化剂用量、微波功率和辐射时间对反应收率的影响。得出最佳反应条件为:n(环己酮)∶n(乙二醇)=1∶1.4,催化剂用量为反应物总质量的3.5%,辐射功率450 W,辐射时间7 m in,产物收率达88.1%。

Cyclohexanone glycol ketal was directly synthesized from cyclohexanone and glycol under microwave irradiation using ammonium ferric sulfate as the catalyst. The effects of reactant mole ratio, catalyst dosage, microwave irradiation power and microwave irradiation time on the yield of cyclohexanone glycol ketal were investigated. The results showed that the optimal condition was as follows： n （cyclohexanone） ： n （ glycol ） = 1： 1.4, catalyst dosage = 3.5 % of the mass of the reactants, microwave irradiation power = 450 W, radiation time = 7min. Cyclohexanone glycol ketal yield of up to 88.1% was obtained.