Silica Microparticles Supported Gold and Copper Ferrite Nanoparticles: A Magnetically Recyclable Bimetallic Catalyst for Sonogashira Reaction

被引：26

作者：

Gholinejad, Mohammad ^{[1
]}

Ahmadi, Jahantab ^{[1
]}

Najera, Carmen ^{[2
,3
]}

机构：

[1] Inst Adv Studies Basic Sci, Dept Chem, POB 45195-1159, Gavazang 451376731, Zanjan, Iran

[2] Univ Alicante, Dept Quim Organ, Apdo 99, E-03080 Alicante, Spain

[3] Univ Alicante, Ctr Innovac Quim Avanzada ORFEO CINQA, Apdo 99, E-03080 Alicante, Spain

来源：

CHEMISTRYSELECT | 2016年 / 1卷 / 03期

基金：

美国国家科学基金会;

关键词：

Nanoparticles; gold; copper ferrite; Sonogashira; Magnetic; SOLVENT-FREE OXIDATION; AEROBIC OXIDATION; COUPLING REACTION; SELECTIVE OXIDATION; ROOM-TEMPERATURE; BENZYL ALCOHOL; NANOCLUSTERS; PALLADIUM; GOLD(III); COMPLEX;

D O I：

10.1002/slct.201600049

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel silica supported gold and copper ferrite nanoparticles (NPs) have been synthesized, characterized and used as a separable dual catalyst in Sonogashira type reaction. These Au.CuFe2O4@ Silica NPs show a high efficiency as catalyst in the alkynylation not only of aryl iodides but also aryl bromides. By using only 0.5 mol% loading and t-BuOK as base in N, N-dimethylacetamide as solvent, aryl iodides react at 115 degrees C in 1 d, whereas for aryl bromides the cross-coupling takes place at 130 degrees C in 2 d. The catalyst can be successfully recycled using an external magnet for four consecutive runs.

引用

页码：384 / 390

页数：7

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