Title of article :
BMIm]BF4-LiCl: An effective catalytic system for the synthesis of pyrano[3,2-c]chromene and pyrano[4,3-b]pyrone derivatives
Author/Authors :
Abbaspour-Gilandeh، Esmayeel نويسنده Department of Chemistry, Faculty of Science, University of Guilan, Rasht, zip code 41335, I.R. Iran , , Azimi، Seyyedeh Cobra نويسنده Department of Chemistry, Faculty of Science, University of Guilan, Rasht, zip code 41335, I.R. Iran , , Rad-Moghadam، Kurosh نويسنده Department of Chemistry, Faculty of Science, University of Guilan, Rasht, zip code 41335, I.R. Iran , , Mohammadi-Barkchai، Aidin نويسنده Department of Applied chemistry, Ardabil Branch, Islamic Azad University, Ardabil , zip code 56157, I.R. Iran ,
Abstract :
An efficient and green method for the synthesis of pyrano[3,2-c]chromene or pyrano[4,3-b]pyrone derivatives is described by using a three-component condensation process of malononitrile, aldehyde, and 4-hydroxycoumarine or 4-hydroxypyrone in [BMIm]BF4-LiCl as an ionic liquid.
