Multi-component, one-pot, aqueous media preparation of dihydropyrano[3, 2-c]chromene derivatives over MgO nanoplates as an efficient catalyst
الموضوعات : Iranian Journal of CatalysisMajid Ghashang 1 , Syed Sheik Mansoor 2 , Leila Shams Solaree 3 , Ali Sharifian-esfahani 4
1 - Department of Chemistry, Faculty of Sciences, Najafabad Branch, Islamic Azad University, P.O. Box: 517; Najafabad, Esfahan, Iran.
2 - Research Department of Chemistry, Bioactive Organic Molecule Synthetic Unit, C. Abdul Hakeem College, Melvisharam – 632 509, Tamil Nadu, India.
3 - Department of Chemistry, Faculty of Sciences, Najafabad Branch, Islamic Azad University, P.O. Box: 517; Najafabad, Esfahan, Iran.
4 - Department of Chemistry, Faculty of Sciences, Najafabad Branch, Islamic Azad University, P.O. Box: 517; Najafabad, Esfahan, Iran.
الکلمات المفتاحية: 4-hydroxycoumarin, MgO nano-plates, Dihydropyrano[3, 2-c]chromenes, Red pine leafs,
ملخص المقالة :
Red pine leafs were applied for the green method preparation of MgO nano-plates. The MgO nano-plates were used for the one-pot synthesis of dihydropyrano [3,2-c] chromene derivatives. This procedure is very simple and affords excellent yields. MgO nanoplates were synthesized via a simple precipitation method with the using of an extract solution of red pine leaves. The XRD pattern shows a cubic phase ofMgO . Field Emission Scanning Electronic Microscopy (FE-SEM) shows clearly that the surface of the as-prepared MgO nano-plates have a homogeneous microstructure made up of layers of various sizes and forms. The plates form irregular grains with a lateral size of 40-110 nm.
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