Chin. J. Org. Chem. ›› 2012, Vol. 32 ›› Issue (08): 1459-1467.DOI: 10.6023/cjoc1201101 Previous Articles     Next Articles

Articles

苯偶姻单酯无溶剂微波加热合成2-取代-4,5-二芳基咪唑衍生物

李宝志, 顾强, 赵天琦, 贺元辉, 佟亚楠, 张玉敏   

  1. 吉林大学化学学院 长春 130012
  • 收稿日期:2012-01-10 修回日期:2012-03-10 发布日期:2012-04-24
  • 通讯作者: 张玉敏 E-mail:zhang_ym@jlu.edu.cn

Microwave-Assisted Synthesis of 2-Substituted-4,5-diarylimidazoles from Benzoin Carboxylate Derivatives under Solvent-Free Conditions

Li Baozhi, Gu Qiang, Zhao Tianqi, He Yuanhui, Tong Yanan, Zhang Yumin   

  1. College of Chemistry, Jilin University, Changchun 130012
  • Received:2012-01-10 Revised:2012-03-10 Published:2012-04-24

Benzoin carboxylate derivatives were synthesized with the aromatic aldehydes as raw material in the presence of the catalyst VB1. And then, benzoin carboxylate derivatives reacted with different acylating reagents under mild reaction conditions, and benzoin carboxylates were obtained. Further, 2-substituted-4,5-di(aryl)imidazoles were produced from benzoin carboxylates in the presence of solid supports Al2O3 under solvent-free and microware assisted condition, and seven of them have not been reported. The reaction possessed many advantages such as mild reaction conditions, short reaction time, and no organic solvents consumed. Therefore, it is a facile and efficient synthetic method. Moreover, the synthesized compounds were characterized by 1H NMR, 13C NMR, IR, HRMS techniques.

Key words: 2-substituted-4,5-di(aryl)imidazoles, benzoin carboxylates, microwave-assisted synthesis, solid-support, solvent-free, esterification