Efficient and selective hydrogen peroxide-mediated oxidation of sulfides in batch and segmented and continuous flow using a peroxometalate-based polymer immobilised ionic liquid phase catalyst

被引：71

作者：

Doherty, S. ^{[1
]}

Knight, J. G. ^{[1
]}

Carroll, M. A. ^{[1
]}

Ellison, J. R. ^{[1
]}

Hobson, S. J. ^{[1
]}

Stevens, S. ^{[1
]}

Hardacre, C. ^{[2
]}

Goodrich, P. ^{[2
]}

机构：

[1] Newcastle Univ, Sch Chem, NUCAT, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Queens Univ Belfast, QUILL Res Ctr, Sch Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland

来源：

GREEN CHEMISTRY | 2015年 / 17卷 / 03期

关键词：

MILD OXIDATION; DEEP DESULFURIZATION; SULFUR HETEROCYCLES; SULFOXIDES; SULFONES; H2O2; FUELS; THIOETHERS; LIGANDS; ALKYLATION;

D O I：

10.1039/c4gc01770f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The peroxometalate-based polymer immobilized ionic liquid phase catalyst [PO4{WO(O-2)(2)}(4)]@PIILP has been prepared by anion exchange of ring opening metathesis-derived pyrrolidinium-decorated norbornene/ cyclooctene copolymer and shown to be a remarkably efficient system for the selective oxidation of sulfides under mild conditions. A cartridge packed with a mixture of [PO4{WO(O-2)(2)}(4)]@PIILP and silica operated as a segmented or continuous flow process and gave good conversions and high selectivity for either sulfoxide (92% in methanol at 96% conversion for a residence time of 4 min) or sulfone (96% in acetonitrile at 96% conversion for a residence time of 15 min). The immobilized catalyst remained active for 8 h under continuous flow operation with a stable activity/selectivity profile that allowed 6.5 g of reactant to be processed (TON = 46 428) while a single catalyst cartridge could be used for the consecutive oxidation of multiple substrates giving activity-selectivity profiles that matched those obtained with fresh catalyst.

引用

页码：1559 / 1571

页数：13

共 92 条

[1] Practical oxidation of sulfides to sulfones by H2O2 catalysed by titanium catalyst [J].