New P^O ligand grafted on periodically organised mesoporous silicas for one-pot bifunctionnal catalysis: Coupling of base catalysed Knoevenagel condensation with in situ Rh catalysed hydrogenationElectronic supplementary information (ESI) available: NMR spectra, TEM micrographs, N2 adsorption/desorption isotherms. See http://www.rsc.org/suppdata/cc/b4/b403491k/
New P^O ligand grafted on periodically organised mesoporous silicas for one-pot bifunctionnal catalysis: Coupling of base catalysed Knoevenagel condensation with in situ Rh catalysed hydrogenationElectronic supplementary information (ESI) available: NMR spectra, TEM micrographs, N2 adsorption/desorption isotherms. See http://www.rsc.org/suppdata/cc/b4/b403491k/
New Hybrid Bidentate Ligands as Precursors for Smart Catalysts
作者:Frédéric Goettmann、Cédric Boissière、David Grosso、François Mercier、Pascal Le Floch、Clément Sanchez
DOI:10.1002/chem.200500542
日期:2005.12.9
grafted onto various periodically organized mesoporous powders, including a new zirconia/silica mixed oxide synthesized by aerosol techniques. After complexation with the [Rh(CO)2]+ fragment, these materials were revealed to be more active in olefin hydrogenation than their homogeneous counterparts. The reasons for this higher activity are discussed in the light of theoretical modeling. Various surface treatments
New P^O ligand grafted on periodically organised mesoporous silicas for one-pot bifunctionnal catalysis: Coupling of base catalysed Knoevenagel condensation with in situ Rh catalysed hydrogenationElectronic supplementary information (ESI) available: NMR spectra, TEM micrographs, N2 adsorption/desorption isotherms. See http://www.rsc.org/suppdata/cc/b4/b403491k/
The 1-phosphanorbornadiene-rhodium complex (Rh-PNBD) anchored on a mesostructured porous silica matrix is the first example of a rhodium center chelated by a phosphorus and an oxygen atom belonging to the anchoring siloxane moiety. These new hybrid silicas behave as very active recyclable hydrogenation catalysts, which combined with additional grafted amino functions allow efficiently driven one-pot bifunctionnal catalysis.