Silica-bonded n-propyldiethylenetriamine sulfamic acid as a recyclable solid acid catalyst for the synthesis of coumarin and biscoumarin derivatives
(ندگان)پدیدآور
Niknam, KhodabakhshSajadi, Seyed AhmadHosseini, RoghayehBaghernejad, Mojtabaنوع مدرک
TextArticles
زبان مدرک
Englishچکیده
Silica-bonded n-propyldiethylenetriamine sulfamic acid (SBPDSA) was found as an efficient solid acid for the synthesis of coumarins. Coumarin derivatives were obtained via the Pechmann condensation reaction of phenols and β-keto-esters at 80 oC under solvent-free conditions. Also, biscoumarins were obtained via the condensation of aldehydes and 4-hydroxycoumarin in water at reflux conditions. The heterogeneous solid acid showed much the same efficiency when used in consecutive reaction runs.
کلید واژگان
Silica-bonded n-propyldiethylenetriamine sulfamic acidCoumarins
Pechmann reaction
Aromatic aldehydes
Biscoumarins
Solid acids
Catalyst
شماره نشریه
3تاریخ نشر
2014-09-011393-06-10
ناشر
Islamic Azad University, Shahreza Branchسازمان پدید آورنده
Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran.Department of Chemistry, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.
Department of Chemistry, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.
Young Researchers and Elite Club, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.
شاپا
2252-02362345-4865