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Issue 37, 2013
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Versatile low-loaded mechanochemically synthesized supported iron oxide nanoparticles for continuous flow alkylations

Alina M. Balu,a  Antonio Pineda,a  David Obermayer,b  Antonio A. Romero,a  C. Oliver Kappe*bc  and  Rafael Luque*a 
Author affiliations

* Corresponding authors

a Departamento de Química Orgánica, Universidad de Córdoba, Edif. Marie Curie, Ctra Nnal IVa, Km 396, Córdoba, Spain

b Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
E-mail: oliver.kappe@uni-graz.at, q62alsor@uco.es
Fax: (+43)-316-380-9840
Tel: (+43)-316-380-5352

c Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia

Abstract

A novel and highly versatile mechanochemically synthesized low-loaded (0.25 wt.%) supported iron oxide nanocatalyst has been demonstrated to be highly active and selective for the production of o- and p-benzylmethylbenzene (preferentially) C–C alkylated products in the continuous flow alkylation of toluene with benzyl chloride as compared to the etherification product (dibenzyl ether) observed in the alkylation of toluene with benzyl alcohol. The low quantities of highly accessible iron oxide nanoparticles on the external surface of an aluminosilicate support provided versatile acidic sites that were able to promote both the alkylation of toluene with benzyl alcohol and benzyl chloride. ICP-MS analysis revealed that the catalyst is highly stable and does not significantly leach under the investigated conditions, providing solid evidence of an iron-catalysed heterogeneous protocol.

Graphical abstract: Versatile low-loaded mechanochemically synthesized supported iron oxide nanoparticles for continuous flow alkylations

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Publication details

The article was received on 24 Apr 2013, accepted on 16 Jul 2013 and first published on 17 Jul 2013


Article type: Communication
DOI: 10.1039/C3RA43160F
Citation: RSC Adv., 2013,3, 16292-16295
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    Versatile low-loaded mechanochemically synthesized supported iron oxide nanoparticles for continuous flow alkylations

    A. M. Balu, A. Pineda, D. Obermayer, A. A. Romero, C. O. Kappe and R. Luque, RSC Adv., 2013, 3, 16292
    DOI: 10.1039/C3RA43160F

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