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Issue 1, 2012
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A magnetic nanoparticle supported dual acidic ionic liquid: a “quasi-homogeneous” catalyst for the one-pot synthesis of benzoxanthenes

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Abstract

A novel magnetic nanoparticle supported dual acidic ionic liquid catalyst was synthesized by anchoring 3-sulfobutyl-1-(3-propyltriethoxysilane) imidazolium hydrogen sulfate onto the surface of silica-coated Fe3O4 nanoparticles. Due to the combination of nano-support features and flexible imidazolium linkers, it acted as a “quasi-homogeneous” catalyst to effectively catalyze the one-pot synthesis of benzoxanthenes by a three-component condensation of dimedone with aldehyde and 2-naphthol under solvent-free conditions. More importantly, the catalyst could be easily recovered by an external magnet and reused six times without significant loss of catalytic activity.

Graphical abstract: A magnetic nanoparticle supported dual acidic ionic liquid: a “quasi-homogeneous” catalyst for the one-pot synthesis of benzoxanthenes

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Publication details

The article was received on 21 Aug 2011, accepted on 11 Oct 2011 and first published on 17 Nov 2011


Article type: Paper
DOI: 10.1039/C1GC16031A
Citation: Green Chem., 2012,14, 201-208
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    A magnetic nanoparticle supported dual acidic ionic liquid: a “quasi-homogeneous” catalyst for the one-pot synthesis of benzoxanthenes

    Q. Zhang, H. Su, J. Luo and Y. Wei, Green Chem., 2012, 14, 201
    DOI: 10.1039/C1GC16031A

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