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
收藏
页码：384 / 390
页数：7
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