Saeedi, M., Jeiroudi, M., Ma’mani, L., Mahdavi, M., Alipour, E., Shafiee, A., Foroumadi, A. (2015). Brønsted 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. Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 34(4), 39-45.
Mina Saeedi; Mohammad Jeiroudi; Leila Ma’mani; Mohammad Mahdavi; Eskandar Alipour; Abbas Shafiee; Ali Reza Foroumadi. "Brønsted 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". Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 34, 4, 2015, 39-45.
Saeedi, M., Jeiroudi, M., Ma’mani, L., Mahdavi, M., Alipour, E., Shafiee, A., Foroumadi, A. (2015). 'Brønsted 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', Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 34(4), pp. 39-45.
Saeedi, M., Jeiroudi, M., Ma’mani, L., Mahdavi, M., Alipour, E., Shafiee, A., Foroumadi, A. Brønsted 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. Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 2015; 34(4): 39-45.
Brønsted 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
1Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, I.R. IRAN
2Department of Chemistry, Tehran-North Branch, Islamic Azad University, Zafar St, Tehran, I.R. IRAN
3Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, I.R. IRAN
Abstract
The surface of SBA-15 was modified by diphenylphosphine; then, it was treated with butane sultone and sulfuric acid to obtain Brønsted 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.