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Issue 3, 2011
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Heterogenised N-heterocyclic carbene complexes: synthesis, characterisation and application for hydroformylation and C–C bond formation reactions

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Abstract

The imidazolium salts: 1-mesityl-3-(3-trimethoxysilylpropyl)imidazolium iodide and 1-tert-butyl-3-(3-trimethoxysilylpropyl)imidazolium iodide, abbreviated as (tmpMes)HI (3a) and (tmptBu)HI (3b), respectively, have been synthesised. The palladium(II) complexes (η3-C3H5) (tmpMes)PdCl (5a) and (η3-C3H5)(tmptBu)PdCl (5b), rhodium(I) and iridium(I) complexes (η4-1,5-COD) (tmpMes)MCl, M = Rh (6a), Ir (7a) and (η4-1,5-COD)(tmptBu)MCl, where M = Rh (6b), Ir (7b), were synthesised by silver transmetallation reactions using the silver(I) complexes (tmpMes)AgI (4a) and (tmptBu)AgI (4b). The iridium complex 7b has been structurally characterised. The Pd(II) and Rh(I) complexes have been immobilised by attachment to chemically modified MCM-41. The immobilised palladium(II) materials have been tested as recyclable catalysts for Suzuki type C–C bond formation reactions in water and the immobilised rhodium(I) materials have been examined for their catalytic ability for the hydroformylation of 1-octene.

Graphical abstract: Heterogenised N-heterocyclic carbene complexes: synthesis, characterisation and application for hydroformylation and C–C bond formation reactions

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Article information


Submitted
30 Jun 2010
Accepted
06 Oct 2010
First published
30 Nov 2010

Dalton Trans., 2011,40, 661-672
Article type
Paper

Heterogenised N-heterocyclic carbene complexes: synthesis, characterisation and application for hydroformylation and C–C bond formation reactions

S. Dastgir, K. S. Coleman and M. L. H. Green, Dalton Trans., 2011, 40, 661
DOI: 10.1039/C0DT00760A

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