Synthesis, characterization and catalytic application of a novel polyethylene-supported Fe/ionic liquid complex

IF 5.062 Journal of Molecular Catalysis A: Chemical Pub Date : 2017-01-01 DOI:10.1016/j.molcata.2016.11.015

Davar Elhamifar , Dawood Elhamifar , Frood Shojaeipoor

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引用次数: 21

Abstract

A novel polyethylene-supported Fe/ionic liquid complex (PEt@Fe/IL) is prepared, characterized and its catalytic performance is investigated in the synthesis of 3,4-dihydropyrimidinones. The chemical properties and thermal stability of the PEt@Fe/IL material were studied by diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, thermal gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray (EDX) analysis. The morphology of the material was obtained using scanning electron microscopy (SEM). The PEt@Fe/IL material was then successfully applied in the Biginelli condensation of aldehydes, urea and alkylacetoacetates to prepare a set of different 3,4-dihydropyrimidinone derivatives in high to excellent yields. The PEt@Fe/IL was recovered and reused several times without significant decrease in efficiency. The other advantages of this novel catalytic system include excellent yield, short reaction time and solvent-free conditions.

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新型聚乙烯负载铁离子液体配合物的合成、表征及催化应用

制备了一种新型聚乙烯负载铁/离子液体配合物(PEt@Fe/IL)，对其进行了表征，并对其催化合成3,4-二氢嘧啶酮的性能进行了研究。利用漫反射红外傅里叶变换(DRIFT)光谱、热重分析(TGA)、x射线光电子能谱(XPS)和能量色散x射线(EDX)分析研究了PEt@Fe/IL材料的化学性质和热稳定性。利用扫描电子显微镜(SEM)获得了材料的形貌。然后将PEt@Fe/IL材料成功地应用于醛、尿素和烷基乙酸乙酯的Biginelli缩合反应中，以高产率制备了一系列不同的3,4-二氢嘧啶酮衍生物。PEt@Fe/IL被回收并重复使用了几次，效率没有明显下降。该新型催化体系的其他优点还包括收率高、反应时间短和无溶剂条件。

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来源期刊

Journal of Molecular Catalysis A: Chemical 化学-物理化学

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审稿时长

2.8 months

期刊介绍： The Journal of Molecular Catalysis A: Chemical publishes original, rigorous, and scholarly full papers that examine the molecular and atomic aspects of catalytic activation and reaction mechanisms in homogeneous catalysis, heterogeneous catalysis (including supported organometallic catalysis), and computational catalysis.