Issue 5, 2005
From the journal:

Green Chemistry

Stabilization of Ti-molecular sieve catalysts used in selective sulfoxidation reactions by ionic liquids†

Valentin Cimpeanu,a   Christopher Hardacre,*b   Vasile I. Pârvulescu*c  and  Jillian M. Thompsonb  

* Corresponding authors

a “C. D. Nenitzescu” Institute of Organic Chemistry, Splaiul Independentei 202B, Bucharest 060023, Romania

b The QUILL Centre and School of Chemistry, Queen's University Belfast, Belfast, Northern Ireland, UK

c University of Bucharest, Department of Chemical Technology and Catalysis, B-dul Regina Elisabeta 4-12, Bucharest 030016, Romania

Abstract

Sulfoxidation reactions of 4,6-dimethyl-2-methylthiopyrimidine have been performed using titanosilicate catalysts in ionic liquids, dioxane and ethanol. The ionic liquid reactions showed superior reactivity compared with molecular solvents. Moreover, on examination of the recycling of the catalyst, a significant increase in the stability of catalyst was found both in terms of recycling activity and leaching of the titanium from the catalyst. The mechanism by which the ionic liquid reduces the solubilisation of the catalysts is explored.

Graphical abstract: Stabilization of Ti-molecular sieve catalysts used in selective sulfoxidation reactions by ionic liquids

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Article information

DOI
https://doi.org/10.1039/B417000H
Article type
Paper
Submitted
08 Nov 2004
Accepted
16 Mar 2005
First published
07 Apr 2005

Green Chem., 2005,7, 326-332

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Stabilization of Ti-molecular sieve catalysts used in selective sulfoxidation reactions by ionic liquids

V. Cimpeanu, C. Hardacre, V. I. Pârvulescu and J. M. Thompson, Green Chem., 2005, 7, 326 DOI: 10.1039/B417000H

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