Journal of Molecular Catalysis A: Chemical

Journal: Journal of Molecular Catalysis A: Chemical

Abbreviation

J. mol. catal., A, Chem.

Publisher

Elsevier

ISSN

1381-1169
1873-314X

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Publications1 - 10 of 25

A novel class of fluorinated cinchona alkaloids as surface modifiers for the enantioselective heterogeneous hydrogenation of α-ketoesters
Mondelli, Cecilia; Bucher, Christoph; Baiker, Alfons; et al. (2010)
Journal of Molecular Catalysis A: Chemical
Novel C-9 fluorinated cinchona alkaloid derivatives were investigated as chiral surface modifiers for the platinum-catalyzed asymmetric heterogeneous hydrogenation of α-ketoesters. Enantioselectivities approaching those observed with the parent alkaloids were obtained, and direct comparison with conformationally labile deoxycinchonidine confirmed that the C-9 fluorine atom is important for performance. In this study, the 9-fluoro derivative of cinchonidine was shown to effect the reduction of ketopantolactone to (R)-pantolactone in quantitative yield with good levels of enantioinduction (57% ee) providing preliminary validation for this novel class of surface modifiers.
Selective oxidation of alcohols with oxygen on Ru-Co-hydroxyapatite: A mechanistic study
Opre, Z.; Grunwaldt, J.-D.; Mallat, T.; et al. (2005)
Journal of Molecular Catalysis A: Chemical
Amination of aryl chlorides and fluorides toward the synthesis of aromatic amines by palladium-catalyzed route or transition metal free way
Kleist, Wolfgang; Pröckl, Sandra S.; Drees, Markus; et al. (2009)
Journal of Molecular Catalysis A: Chemical
Solventless synthesis of propylene carbonate catalysed by chromium–salen complexes: Bridging homogeneous and heterogeneous catalysis
Ramin, Michael; Jutz, Fabian; Grunwaldt, Jan-Dierk; et al. (2005)
Journal of Molecular Catalysis A: Chemical
Various homogeneous chromium–salen complexes were synthesised and tested concerning their catalytic performance in the synthesis of propylene carbonate from carbon dioxide and propylene oxide. The most active complexes were immobilised on a silica support and tested in the same reaction. Different immobilisation methods were applied including anchoring of the complex through coordination with the metal, and covalent bonding via the ligand. Rates up to 300 molproduct h−1 at 98% selectivity were achieved with the heterogeneous catalysts without the use of any additional solvent or co-catalyst. The coordinatively-bound complexes showed low stability and a very strong deactivation during reuse, whereas the corresponding covalently-bound complexes hardly showed any chromium leaching during catalyst recycling experiments. The catalysts were characterised by means of X-ray photoelectron spectroscopy (XPS), thermal analysis, inductively-coupled plasma optical emission spectrometry (ICP-OES) and diffuse reflectance IR spectroscopy (DRIFTS) in as-prepared state and after use.
A simple preparation of an efficient heterogeneous gold catalyst for aerobic amine oxidation
Aschwanden, Linda; Mallat, Tamas; Krumeich, Frank; et al. (2009)
Journal of Molecular Catalysis A: Chemical
Hydrogenation of 2,2,2-trifluoroacetophenone
Pereniguez, Rosa; Santarossa, Gianluca; Mallat, Tamas; et al. (2012)
Journal of Molecular Catalysis A: Chemical
Chemo and enantioselective hydrogenation of fluorinated ketones on platinum modified with (R)-1-(1-naphthyl)ethylamine derivatives
Diezi, Simon; Hess, Marco; Orglmeister, Elisabeth; et al. (2005)
Journal of Molecular Catalysis A: Chemical
Gallium-modified zeolites for the selective conversion of bio-based dihydroxyacetone into C₁-C₄ alkyl lactates
Dapsens, Pierre Y.; Kusema, Bright T.; Mondelli, Cecilia; et al. (2014)
Journal of Molecular Catalysis A: Chemical
Selective side-chain oxidation of alkyl aromatic compounds catalyzed by cerium modified silver catalysts
Beier, Matthias J.; Schimmoeller, Bjoern; Hansen, Thomas W.; et al. (2010)
Journal of Molecular Catalysis A: Chemical
Enantioselective reduction of isatin derivatives over cinchonidine modified Pt/alumina
Sonderegger, Otmar J.; Bürgi, Thomas; Limbach, Ludwig K.; et al. (2004)
Journal of Molecular Catalysis A: Chemical

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Journal: Journal of Molecular Catalysis A: Chemical

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