| Authors | M. Mehravar , B.B.F. Mirjalili, A. Bamoniri and E. Babaei |
|---|---|
| Journal | organic chemistry research |
| Page number | 127 |
| Volume number | 7 |
| IF | ثبت نشده |
| Paper Type | Full Paper |
| Published At | 2023-10-11 |
| Journal Grade | Scientific - research |
| Journal Type | Electronic |
| Journal Country | Iran, Islamic Republic Of |
Abstract
In this research, a high efficient, simply and rapid method was applied for the synthesis of dihydropyrano[3,2-c]chromene derivatives by one-pot, three-component condensation of aldehydes, malononitrile and 4-hydroxycoumarin in H2O/ethanol (1:1 v/v) under reflux conditions. This reaction was run by using nano-silica supported 1,5-diazabicyclo(4.3.0)non-5-en (DBN) which has been abbreviated as nano-SiO2/DBN under aqueous condition. The nano-SiO2/DBN catalyst was synthesized by reaction between silica chloride and DBN. The main advantages of this procedure are high yields, short reaction times and easy work-up. Furthermore, the catalyst could be reused for five times
tags: Dihydropyrano[3,2-c]chromene, 4-Hydroxycoumarin, 1,5-Diazabicyclo(4.3.0)non-5-en, Nano-Silica, nano-SiO2/DBN, Aqueous medium