超声辐射下酸性离子液体催化合成1,1-二乙酸酯  

Synthesis of 1,1- diacetates with acidic ionic liquid as catalyst under ultrasonic irradiation

作　　者：汤小芳[1,2] 刘显明[1,2] 周昊[1,2] 仇涛涛 储海蓉[1] 邢志恒[1] 

机构地区：[1]南京理工大学泰州科技学院化工学院,江苏泰州225300 [2]秦州南京理工大学研究院,江苏泰州225300

出　　处：《日用化学工业》2014年第12期695-699,共5页China Surfactant Detergent & Cosmetics

基　　金：江苏省高等学校大学生实践创新训练计划资助项目(201413842004Y);南京理工大学泰州科技学院化工学院"梦兰神彩"大学生创新基金资助项目(CX2014005)

摘　　要：室温无溶剂超声辐射下,以功能化酸性离子液体[C3SO3Hnhm][HSO4]为催化剂、芳香醛和乙酸酐为原料合成1,1-二乙酸酯。通过单因素试验优化了反应条件,研究了该离子液体的重复使用性能及催化剂的底物适用性。结果表明,当苯甲醛与乙酸酐的摩尔比为1∶2.3,20℃超声辐射反应15 min,催化剂用量为苯甲醛物质的量的1%时,收率可达96%以上;[C3SO3Hnhm][HSO4]重复使用5次,其催化活性下降不明显;将[C3SO3Hnhm][HSO4]用于其他芳香醛的催化,收率为84%～98%。Under conditions of room temperature,solvent- free and ultrasonic irradiation,with an aromatic aldehyde and acetic anhydride as starting materials and functionalized acidic ionic liquid [C3SO3Hnhm][HSO4]as catalyst,1,1- diacetates was synthesized. The optimal reaction conditions were found by single factor experiments. Reusing performance of the catalyst as well as applicability of the substrate were investigated.Results showed that when the molar ratio of benzaldehyde and acetic anhydride is 1 ∶ 2. 3; the reaction temperature is 20 ℃; ultrasonic irradiation applies for 15 min; and the dosage of catalyst is 1% of benzaldehyde; the yield can reach more than 96%. The catalyst [C3SO3Hnhm][HSO4]can be reused for 5times with no significant declining of the catalytic activity. In case the catalyst [C3SO3Hnhm][HSO4]is used to catalyze the reaction of other aromatic aldehydes,the yield achieves 84%- 98%.

关 键 词：1 1-二乙酸酯 酸性离子液体 超声辐射 催化合成 绿色工艺 

分 类 号：TQ225.24[化学工程—有机化工]