AlCl3 supported on nano silica as an efficient catalyst for the preparation of coumarin
الموضوعات : International Journal of Heterocyclic ChemistryLeila Sarami 1 , Elham Tahanpesar 2
1 - Department of Chemistry, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
2 - 2Department of Chemistry, Khouzestan Science and Research Branch, Islamic Azad University, Ahvaz, Iran
الکلمات المفتاحية: phenols, Pechmann condensation, AlCl3/SiO2NPs, coumarin,
ملخص المقالة :
The Pechmann condensation has been used as a simple and efficient method for the preparation of coumarin derivatives, which phenols and ethyl acetoacetate were reacted in the presence of AlCl3 supported on nano silica as an efficient catalyst at 110 oC under solvent free condition to form products with good to excellent yield (55 -90%), which are identified by spectroscopic method ( FT-IR, NMR) and melting points and compared with reference samples.
