Chinese Journal of Organic Chemistry ›› 2022, Vol. 42 ›› Issue (11): 3714-3720.DOI: 10.6023/cjoc202206002 Previous Articles     Next Articles

ARTICLES

低共熔溶剂/苯磺酸: 通过Biginelli反应合成二氢嘧啶酮类化合物的环境友好催化体系

郑露露, 王雨晴, 李小港*(), 张文彬   

  1. 宜春学院化学与生物工程学院 江西宜春 336000
  • 收稿日期:2022-06-02 修回日期:2022-07-12 发布日期:2022-08-10
  • 通讯作者: 李小港
  • 基金资助:
    江西省教育厅自然科研基金(GJJ201611)

Deep Eutectic Solvent/Benzenesulfonic Acid: An Environmental Friendly Catalyst System towards the Synthesis of Dihydropyrimidinones via Biginelli Reaction

Lulu Zheng, Yuqing Wang, Xiaogang Li(), Wenbin Zhang   

  1. College of Chemistry and Bio-engineering, Yichun University, Yichun, Jiangxi 336000
  • Received:2022-06-02 Revised:2022-07-12 Published:2022-08-10
  • Contact: Xiaogang Li
  • Supported by:
    Science Foundation of Jiangxi Provincial Office of Education(GJJ201611)

In a deep eutectic solvent (DES) that composed of choline chloride and ethylene glycol, 3,4-dihydropyrimidin- 2(1H)-ones were synthesized via Biginelli reaction catalyzed by p-toluenesulfonic acid (p-TSA). 3,4-Dihydropyrimidin-2(1H)- ones were synthesized under mild conditions with high yield. High purity products were obtained by direct filtration without further purification. This catalytic system can be recycled, and the catalysts, solvents and remaining reactants can be directly recycled without separation. The results showed that the catalyst can be recycled up to 8 times. A wide variety of groups such as F, Cl, OMe, NO2, CH3, and CH3CONH were tolerated in this procedure, and 20 products were obtained in high yields (79%~99%).

Key words: deep eutectic solvent (DES), Biginelli reaction, dihypyrimidinone, p-toluenesulfonic acid (p-TSA)