A new Cu Schiff base complex with histidine and glutaraldehyde immobilized on modified iron oxide nanoparticles as a recyclable catalyst for the oxidative homocoupling of terminal alkynes
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- 作者：Faezeh Farzaneh ; Elnaz Rashtizadeh
- 刊名：Journal of the Iranian Chemical Society
- 出版年：2016
- 出版时间：June 2016
- 年：2016
- 卷：13
- 期：6
- 页码：1145-1154
- 全文大小：2,029 KB
- 刊物主题：Analytical Chemistry; Inorganic Chemistry; Physical Chemistry; Biochemistry, general; Organic Chemistry;
- 出版者：Springer Berlin Heidelberg
- ISSN：1735-2428
- 卷排序：13
文摘
The novel functionalized Fe3O4@SiO2@APTMS@Glu-His@Cu complex was prepared from modification of iron oxide nanomagnet particles with (3-aminopropyl) trimethoxysilane (APTMS) and glutaraldehyde–histidine Schiff base followed by complexation with Cu(I) salt. Characterization of this complex was carried out by means of FTIR, XRD, SEM, TEM and VSM techniques. The complex was found to successfully catalyze the oxidative homocoupling of phenylacetylene, 4-tert-butylphenylacetylene, 1-ethynyl-4-fluorobenzene and pent-1-yn-3-ol with 67–100 % conversions and 95–100 % selectivities. Magnetic recovery and recycling of the catalyst without significant decrease in activity is described in this presentation.KeywordsModified magnetic nanoparticlesOxidative homocouplingTerminal alkynesSchiff base copper complex