Zn2SnO4 nanostructure as an efficient catalyst for the preparation of pyrano[3,2-c]chromene and pyrano[4,3-b]pyran derivatives under ultrasonic irradiation conditions

Document Type : Research Paper


Department of Chemistry, Faculty of Sciences, Najafabad Branch, Islamic Azad University, Najafabad, Iran


We plan to study the synthesis of Zn2SnO4 nanoparticles via a sol-gel method and evaluate their catalytic activity in the three-component reaction including active enolates, active methylene, and aldehydes leading to the formation of the pyran derivatives. Functionalized pyrano[3,2-c]chromenes and pyrano[4,3-b]pyran derivatives were synthesized via a one-pot, a three-component reaction under ultrasonic irradiation conditions in good to excellent yields. The catalyst was characterized by XRD, FESEM and TEM analyses.

Graphical Abstract

Zn2SnO4 nanostructure as an efficient catalyst for the preparation of pyrano[3,2-c]chromene and pyrano[4,3-b]pyran derivatives under ultrasonic irradiation conditions


  • Zn2SnO4 nanoparticles were prepared by a sol-gel method and characterized.
  • Pyrano[3,2-c]chromenes and pyrano[4,3-b]pyran derivatives were synthesized under ultrasonic irradiation conditions using Zn2SnO4 nanoparticles as catalyst.
  • The heterogeneous recoverable catalyst, and mild reaction conditions are the advantages of this method.


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Volume 5, Issue 1
May 2019
Pages 61-69
  • Receive Date: 05 January 2019
  • Revise Date: 15 April 2019
  • Accept Date: 27 June 2019
  • First Publish Date: 30 June 2019