Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (6): 20220671.doi: 10.7503/cjcu20220671

• Organic Chemistry • Previous Articles     Next Articles

Continuous Flow Synthesis of Structurally Symmetrical N-aryl 4-Pyridinones via a Multicomponent Tandem Reaction

YANG Qi1, LI Weiqiang1, HUANG Shuntao1, LI Jingpeng1, LIU Teng2(), HUANG Chao1()   

  1. 1.National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials,School of Chemistry and Environment,Yunnan Minzu University,Kunming 650503,China
    2.College of Chemistry and Environmental Science,Qujing Normal University,Qujing 655011,China
  • Received:2022-10-14 Online:2023-06-10 Published:2022-12-06
  • Contact: LIU Teng, HUANG Chao E-mail:15288404381@163.com;huangchao@ynu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21662046);the Scientific Research Fund of Yunnan Provincial Department of Education, China(2021Y667);the Yunnan Local Colleges Research Projects of China(202101BA070001-049)

Abstract:

A concise and efficient approach involving multicomponent tandem reaction to the synthesis of structurally symmetrical N-aryl-4-pyridinone derivatives utilized by continuous flow technology was developed. N-aryl-4-pyridones(24 examples) were synthesized using this practice protocol. The significant benefits of this method are three cheap and easily available raw materials, such as aromatic amines, triethyl orthoformate and 3-oxo-pentanedioic acid dialkyl ester, ethanol as solvent, catalyst-free reaction under mild conditions, short reaction times(20—90 min). It is worth noting that compared with the traditional batch reaction, this method has simple operation and high yield, and the product only needs to be recrystallized without column chromatography separation, which provides a new scheme for the preparation of symmetrical N-aryl-4-pyridone compounds.

Key words: Continuous flow technology, Multicomponent reaction, N-Aryl-4-pyridinone, Cascade reaction

CLC Number: 

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