Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (5): 518-525.DOI: 10.11944/j.issn.1000-0518.2018.05.170220

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Efficient Synthesis of 2-Amino-3-cyano-4H-pyran Derivatives via Catalyst-Free One-Pot Tri-Component Reaction

LÜ Yuea,MAO Shengxuea,LI Feia,ZHU Xiaoleib,LÜ Chengweia*()   

  1. aCollege of Chemistry and Chemical Engineering,Liaoning Normal University,Dalian,Liaoning 116029,China
    bTeachers Training College of Anshan,Anshan,Liaoning 114000,China
  • Received:2017-06-23 Accepted:2017-10-18 Published:2018-04-23 Online:2018-04-23
  • Contact: LÜ Chengwei
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21403100), the Doctoral Scientific Research Foundation of Liaoning Province(No.20141100)

Abstract:

4H-Pyrans and 4H-pyran-annulated heterocyclic scaffolds are the key building blocks of numerous natural products and represent a “drug-like” structural motif with a broad spectrum of applications in organic synthesis and medicinal chemistry. In this paper, a convenient one-pot three-component strategy was conducted successfully under catalyst-free condition employing water as reaction medium and ethanol as co-solvent. Three kinds, over fifty 2-amino-3-cyano-4H-pyran derivatives were synthesized in good to excellent yields by the condensation of a series of aromatic aldehydes with malononitrile and different 1,3-dicarbonyl compounds. Broad substrate scope, systematic characterization, eliminated catalyst, mild reaction condition, simple purification procedure are the best advantages in this methodology.

Key words: multi-component reaction, catalyst-free, water, 4H-pyran derivatives, green synthesis