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Well-Defined Single-Site Heterogeneous Ir-NHC Catalysts for H/D Exchange Reaction via Surface OrganoMetallic Chemistry on Hybrid Organic-Inorganic Materials

Tarun Maishal 1Johan Alauzun 2Jean-Marie Basset 1Christophe Coperet 1Robert J. Corriu 2Erwan Jeanneau 3Ahmad Mehdi 2Catherine Reyé 2Laurent Veyre 1Chloe M. Thieuleux 1

1. Chimie, Catalyse, Polymère, Procédé, UMR CNRS CPE UCBL (CCPP), 43 bd du 11 Nov. 1918, Villeurbanne 69616, France
2. Institut Charles Gerhardt, CC15, Place eugène Bataillon, Montpellier 34095, France
3. UCBL, Centre de Diffractometrie Henri Longchambon, 43, Bd du 11 Novembre 1918, Villeurbanne 69616, France


A well-defined Ir-NHC-based heterogeneous catalyst was synthesized by Surface Organometallic Chemistry on mesostructured hybrid organic inorganic silica. This Ir-NHC catalyst was obtained in three key steps: i) synthesis of a mesostructured material with regularly distributed imidazolium units, ii) formation of Ag-NHC moieties and iii) transmetallation with [Cp*IrCl2]2, each step being fully controlled and supported by several analytical techniques (XRD, BET, elemental analysis and solid state NMR). This Ir-NHC material is highly active in H/D-exchange reaction of acetophenone with methanol-d4. Noteworthy, this catalytic material has catalytic performances similar to homogeneous homologues with the advantage of being easily recyclable.


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Presentation: Oral at E-MRS Fall Meeting 2008, Symposium D, by Chloe M. Thieuleux
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-27 15:14
Revised:   2009-06-07 00:48