Ferrocene-tagged ionic liquid stabilized on silica-coated magnetic nanoparticles: Efficient catalyst for the synthesis of 2-amino-3-cyano-4H-pyran derivatives under solvent-free conditions

被引：60

作者：

Teimuri-Mofrad, Reza ^{[1
]}

Gholamhosseini-Nazari, Mahdi ^{[1
]}

Payami, Elmira ^{[1
]}

Esmati, Somayeh ^{[1
]}

机构：

[1] Univ Tabriz, Dept Organ & Biochem, Fac Chem, Tabriz 5166614766, Iran

来源：

APPLIED ORGANOMETALLIC CHEMISTRY | 2018年 / 32卷 / 01期

关键词：

2-amino-3-cyano-4H-pyran; ferrocene; magnetic nanocatalyst; solvent-free; ONE-POT SYNTHESIS; ANTIMICROBIAL ACTIVITIES; HOMOGENEOUS CATALYST; NATURAL-PRODUCTS; AQUEOUS-MEDIA; NAPHTHOPYRAN; FACILE; METAL; NANOCATALYSTS; COMPLEXATION;

D O I：

10.1002/aoc.3955

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

An advanced novel magnetic ionic liquid based on imidazolium tagged with ferrocene, a supported ionic liquid, is introduced as a recyclable heterogeneous catalyst. Catalytic activity of the novel nanocatalyst was investigated in one-pot three-component reactions of various aldehydes, malononitrile and 2-naphthol for the facile synthesis of 2-amino-3-cyano-4H-pyran derivatives under solvent-free conditions without additional co-catalyst or additive in air. For this purpose, we firstly synthesized and investigated 1-(4-ferrocenylbutyl)-3-methylimidazolium acetate, [FcBuMeIm][OAc], as a novel basic ferrocene-tagged ionic liquid. This ferrocene-tagged ionic liquid was then linked to silica-coated nano-Fe3O4 to afford a novel heterogeneous magnetic nanocatalyst, namely [Fe3O4@SiO2@Im-Fc][OAc]. The synthesized novel catalyst was characterized using H-1 NMR, C-13 NMR, Fourier transform infrared and energy-dispersive X-ray spectroscopies, X-ray diffraction, and transmission and field emission scanning electron microscopies. Combination of some unique characteristics of ferrocene and the supported ionic liquid developed the catalytic activity in a simple, efficient, green and eco-friendly protocol. The catalyst could be reused several times without loss of activity.

引用

页数：16

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