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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