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Synlett 2004(9): 1525-1528  
DOI: 10.1055/s-2004-829061
LETTER
© Georg Thieme Verlag Stuttgart · New York

Iridium Nanoparticles Prepared in Ionic Liquids: An Efficient Catalytic ­System for the Hydrogenation of Ketones

Gledison S. Fonseca, Jackson D. Scholten, Jairton Dupont*
Laboratory of Molecular Catalysis, Institute of Chemistry - UFRGS, Av. Bento Gonçalves 9500, Porto Alegre, 91501-970 RS, Brazil
Fax: +55(513)3167304; e-Mail: dupont@iq.ufrgs.br;
Further Information

Publication History

Received 20 January 2004
Publication Date:
01 July 2004 (online)

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Abstract

Ir(0) nanoparticles with 2.3 ± 0.4 nm in diameter prepared by simple reduction of [Ir(cod)Cl]2 in 1-n-butyl-3-methylimidazolium hexafluorophosphate ionic liquid constitute a simple, efficient and recyclable catalytic system for the solventless or biphasic hydrogenation of ketones under mild reaction conditions.

Key words

ionic liquids - hydrogenation - iridium - ketones - nanoparticles - biphasic catalysis

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