Silica-bonded n-propyldiethylenetriamine sulfamic acid as a recyclable solid acid catalyst for the synthesis of coumarin and biscoumarin derivatives

被引：0

作者：

Niknam, Khodabakhsh ^{[1
]}

Sajadi, Seyed Ahmad ^{[2
]}

Hosseini, Roghayeh ^{[2
]}

Baghernejad, Mojtaba ^{[3
]}

机构：

[1] Persian Gulf Univ, Dept Chem, Fac Sci, Bushehr 75169, Iran

[2] Islamic Azad Univ, Gachsaran Branch, Dept Chem, Gachsaran, Iran

[3] Islamic Azad Univ, Gachsaran Branch, Young Researchers & Elite Club, Gachsaran, Iran

来源：

IRANIAN JOURNAL OF CATALYSIS | 2014年 / 4卷 / 03期

关键词：

Silica-bonded n-propyldiethylenetriamine sulfamic acid; Coumarins; Pechmann reaction; Aromatic aldehydes; Biscoumarins; Solid acids; Catalyst;

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 beta-keto-esters at 80 degrees C 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.

引用

页码：163 / 173

页数：11

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