Multi-component, one-pot, aqueous media preparation of dihydropyrano[3, 2-c]chromene derivatives over MgO nanoplates as an efficient catalyst

Authors

• Majid Ghashang ¹
• Syed Sheik Mansoor ²
• Leila Shams Solaree ³
• Ali Sharifian-esfahani ³

1. Department of Chemistry, Najafabad Branch, Islamic Azad University, P.O. Box: 517; Najafabad, 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.

Abstract

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.

Keywords

• Dihydropyrano[3
• 4-hydroxycoumarin
• MgO nano-plates
• 2-c]chromenes
• Red pine leafs