Novel magnetic nanoparticles Fe3O4-immobilized domino Knoevenagel condensation, Michael addition, and cyclization catalyst

被引：101
|
作者：
Rostami, Amin [1 ]
Atashkar, Bahareh [1 ]
Gholami, Hoshyar [1 ]
机构：
[1] Univ Kurdistan, Fac Sci, Dept Chem, Sanandaj 6617715175, Iran
来源：
CATALYSIS COMMUNICATIONS | 2013年 / 37卷
关键词：
Magnetic nanoparticles; Guanidine; Basic nanocatalyst; Knoevenagel condensation; Chromene derivatives; ONE-POT SYNTHESIS; SOLVENT-FREE; HIGHLY EFFICIENT; GREEN SYNTHESIS; IONIC LIQUID; DERIVATIVES; ACID;
D O I：
10.1016/j.catcom.2013.03.022
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 synthesis, characterization and applications of guanidine supported on magnetic nanoparticles Fe3O4 (MNPs-Guanidine) as a novel magnetically separable base nanocatalyst are described. We have studied the application of this new catalyst for the Knoevenagel condensation reaction of aromatic aldehydes with malononitrile or cyanoacetate in PEG/water = 1:1 at room temperature. Also, the three-component and one-pot synthesis of 2-amino-4H-chromenes and 2-amino-4H-benzo[h]chromenes by condensing aldehydes, malononitrile and cyclic 1,3-dicarbonyl/alpha-naphthol, in the presence of catalytic amount of MNPs-Guanidine under same conditions is investigated. The supported catalyst could simply be separated and recovered from the reaction mixture with the assistance of an external magnet and reused several times. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：69 / 74
页数：6
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