New metal complexes supported on Fe3O4 magnetic nanoparticles as recoverable catalysts for selective oxidation of sulfides to sulfoxides

被引:30
作者
Hajjami, Maryam [1 ]
Kolivand, Somaye [1 ]
机构
[1] Ilam Univ, Fac Sci, Dept Chem, POB 69315516, Ilam, Iran
关键词
Zr(IV) complex of Fe3O4; Cu(II) complex of Fe3O4; magnetic nanoparticles; sulfoxides; EFFICIENT CATALYST; HYDROGEN-PEROXIDE; HETEROGENEOUS CATALYST; REUSABLE NANOCATALYST; COPPER(II); ACID; SILICA; SULFONES; AMBIENT; MCM-41;
D O I
10.1002/aoc.3429
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Fe3O4 nanoparticles were coated with aminopropyltriethoxysilane and subsequently reacted with isatin to obtain imine-bonded Fe3O4 nanoparticles. The addition of ZrOCl2 center dot 8H(2)O or CuCl2 led to the formation of complexes of Zr(IV)/isatin@Fe3O4 or Cu (II)/isatin@Fe3O4 as new magnetically separable catalysts. The synthesized catalysts were characterized using various techniques. These catalysts are shown to be efficient for chemo-selective oxidation of sulfides to sulfoxides using hydrogen peroxide as oxidative agent. This system has many advantages, such as excellent level of reusability of magnetic catalysts, high yields, simplicity of separation of catalysts using an external magnet, environmental benignity and ease of handling. Copyright (C) 2016 John Wiley & Sons, Ltd.
引用
收藏
页码:282 / 288
页数:7
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