Rapid and Efficient Functionalized Ionic Liquid-Catalyzed Aldol Condensation Reactions Associated with Microwave Irradiation

International Journal of Molecular Sciences

Chang Wang¹  Jing Liu¹  Wenguang Leng¹ 

[1] Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;

关键词: ionic liquid;    green chemistry;    aldol reaction;    microwave;   

DOI  :  10.3390/ijms15011284

来源: mdpi

【 摘 要 】

Five quaternary ammonium ionic liquid (IL) and two tetrabutylphosphonium ILs were prepared and characterized. An environmentally benign and convenient functionalized ionic liquid catalytic system was thus explored in the aldol condensation reactions of aromatic aldehydes with acetone. The aldol reactions proceeded more efficiently through microwave-assisted heating than through conventional thermal heating. The yield of products obtained under microwave heating for 30 min was approximately 90%, and the ILs can be recovered and reused at least five times without apparent loss of activity. In addition, this catalytic system can be successfully extended to the Henry reactions.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland