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Lookup NU author(s): Dr Simon DohertyORCiD, Dr Julian Knight, Dr Michael Carroll, Jack Ellison, Dr Stephen Hobson, Sam Stevens
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
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.
Author(s): Doherty S, Knight JG, Carroll MA, Ellison JR, Hobson SJ, Stevens S, Hardacre C, Goodrich P
Publication type: Article
Publication status: Published
Journal: Green Chemistry
Year: 2015
Volume: 17
Issue: 3
Pages: 1559-1571
Print publication date: 01/01/2015
Online publication date: 08/12/2014
Acceptance date: 08/12/2014
Date deposited: 11/05/2015
ISSN (print): 1463-9262
ISSN (electronic): 1463-9270
Publisher: Royal Society of Chemistry Publications
URL: http://dx.doi.org/10.1039/c4gc01770f
DOI: 10.1039/c4gc01770f
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