Role of various heteropolyacids in the reaction of 4-hydroxycoumarin, aldehydes and ethylcyanoacetate

被引：88

作者：

Heravi, Majid M. ^{[1
]}

Sadjadi, Samaheh ^{[1
]}

Haj, Negar Mokhtari ^{[1
]}

Oskooie, Hossein A. ^{[1
]}

Bamoharram, Fatemeh F. ^{[2
]}

机构：

[1] Alzahra Univ, Dept Chem, Sch Sci, Tehran, Iran

[2] Islamic Azad Univ, Dept Chem, Sch Sci, Mashhad Branch, Mashhad, Iran

来源：

CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 13期

基金：

美国国家科学基金会;

关键词：

Bis-coumarin; Dihydropyrano[3,2-c]chromene; Heteropolyacids; Recyclable catalyst; RECYCLABLE CATALYST; ANTIHYPERTENSIVE ACTIVITY; GREEN; DERIVATIVES; ACID;

D O I：

10.1016/j.catcom.2009.04.031

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：

The effects of various heteropolyacids including Preyssler, Wells-Dawson and Keggin regarding the yields and types of products in the reaction of 4-hydroxycoumarin, aldehydes and ethylcyanoacetate have been investigated. The results show that dihydropyrano[3,2-c]chromenes were obtained in the presence of Preyssler and Wells-Dawson as the only products while in the presence of Keggins, this reaction led to formation of two compounds including bis-coumarins as major and dihydropyrano[3,2-c]chromenes as minor products. (C) 2009 Published by Elsevier B.V.

引用

收藏

页码：1643 / 1646

页数：4

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