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

Abstract

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.

Keywords

• zn2sno4 nanoparticles
• pyran derivatives
• multicomponent reaction
• pyrano[3
• 2-c]chromene