Bismuth triflate: A highly efficient catalyst for the synthesis of bio-active coumarin compounds via one-pot multi-component reaction

被引：31
|
作者：
El Aleem, Mahmoud. Abd [1 ]
El-Remaily, Ali. Ali. [1 ]
机构：
[1] Sohag Univ, Fac Sci, Dept Chem, Sohag 82524, Egypt
来源：
CHINESE JOURNAL OF CATALYSIS | 2015年 / 36卷 / 07期
关键词：
Coumarin; Chalcone; Pyrazoline; One-pot multi-component reaction; Salicylaldehyde; alpha-Ketoester; Bismuth triflate [Bi(OTf)(3); ORGANIC-SYNTHESIS; RECENT PROGRESS; CHALCONES; DERIVATIVES; AGENTS; DIFFERENTIATION; ANTIOXIDANT; GENERATION; CHEMISTRY; ALDEHYDES;
D O I：
10.1016/S1872-2067(14)60308-9
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A series of coumarin-chalcone hybrid compounds and coumarins linked to pyrazoline was synthesized in good yield and short time using a simple and efficient method. This method involved the one-pot reaction of salicylaldehyde, an alpha-ketoester and an aromatic aldehyde (in the case of the coumarin-chalcone derivatives) in addition to hydrazine hydrate (in the case of the pyrazolyl coumarins) in the presence of a catalytic amount of bismuth triflate [Bi(OTf)(3), 5 mol%]. The synthesized compounds showed scavenging activity towards the free radical 2,2-diphenyl-1-picrylhydrazyl. All compounds were characterized using IR, H-1 NMR and C-13 NMR spectroscopy. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1124 / 1130
页数：7
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