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Bronsted Acidic Phosphonium Based Ionic Liquid Functionalized Sba-15 [Ho3s-Phospil@Sba-15]: Green, Recyclable, and Efficient Catalyst for the Synthesis of Pyrano[3,2-C]Chromenone Derivatives



Saeedi M1 ; Jeiroudi M2 ; Mamani L3 ; Mahdavi M3 ; Alipour E2 ; Shafiee A3 ; Foroumadi AR3
Authors
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Authors Affiliations
  1. 1. Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Chemistry, Tehran-North Branch, Islamic Azad University, Zafar St, Tehran, Iran
  3. 3. Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran

Source: Iranian Journal of Chemistry and Chemical Engineering Published:2015

Abstract

The surface of SBA-15 was modified by diphenylphosphine; then, it was treated with butane sultone and sulfuric acid to obtain Bronsted acid HO3S-phosphonium based ionic liquid functionalized SBA-15 with HSO4- as a counteranion. It efficiently catalyzed synthesis of pyrano[3,2-c]chromenone derivatives through the reaction of 4-hydroxycoumarin and chalcones at 60 °C in water/ethanol. Good yields, mild reaction conditions, and user-friendly procedure are advantages of this method. Also, the catalyst could be easily separated and reused five times without significant reduction of activity. © 2015, E-Flow PDF Iranian Journal of Chemistry and Chemical Engineering. All rights reserved.