Abstract
Novel heterogenized asymmetric catalysts were synthesized by immobilizing preformed Ru catalysts on magnetite nanoparticles via the phosphonate functionality and were characterized by a variety of techniques, including TEM, magnetization, and XRD. These nanoparticle-supported chiral catalysts were used for enantioselective heterogeneous asymmetric hydrogenation of aromatic ketones with very high enantiomeric excess values of up to 98.0%. The immobilized catalysts were easily recycled by magnetic decantation and reused for up to 14 times without loss of activity and enantioselectivity. Orthogonal nature of the present catalyst immobilization approach should allow the design of other superparamagnetic nanoparticle-supported asymmetric catalysts for a wide range of organic transformations.
Keywords
ChemistryCatalysisNanoparticleEnantioselective synthesisMagnetiteSuperparamagnetismDecantationPhosphonateMagnetic nanoparticlesEnantiomerAsymmetric hydrogenationChemical engineeringHeterogeneous catalysisOrganic chemistryCombinatorial chemistryMagnetizationMaterials scienceMetallurgy
Affiliated Institutions
Related Publications
A Homochiral Porous Metal−Organic Framework for Highly Enantioselective Heterogeneous Asymmetric Catalysis
A homochiral porous noninterpenetrating metal-organic framework (MOF), 1, was constructed by linking infinite 1D [Cd(mu-Cl)2]n zigzag chains with axially chiral bipyridine bridg...
[Bis(catechol)salen]Mn<sup>III</sup> Coordination Polymers as Support‐Free Heterogeneous Asymmetric Catalysts for Epoxidation
Abstract The formation of coordination polymers by the reaction of [bis(catechol)salen]Mn III with several di‐ and trivalent metal ions is reported. These polymers are insoluble...
Superparamagnetic Nanoparticle-Supported Catalysis of Suzuki Cross-Coupling Reactions
Emulsion polymerization was examined as a novel route for the synthesis of core/shell superparamagnetic nanoparticles consisting of a highly crystalline gamma-Fe2O3 core and a v...
Selective Hydrogenation over Supported Metal Catalysts: From Nanoparticles to Single Atoms
Selective catalytic hydrogenation has wide applications in both petrochemical and fine chemical industries, however, it remains challenging when two or multiple functional group...
Polymer‐bound cellulose phenylcarbamate derivatives as chiral stationary phases for enantioselective HPLC
Abstract Novel chiral stationary phases (CSP) have been prepared by coating the internal surface of monodisperse macroporous poly(2‐aminoethyl methacrylate‐ co ‐ethylene dimetha...
Publication Info
- Year
- 2005
- Type
- article
- Volume
- 127
- Issue
- 36
- Pages
- 12486-12487
- Citations
- 611
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
611
OpenAlex
Cite This
Aiguo Hu,
G.T. Yee,
Wenbin Lin
(2005).
Magnetically Recoverable Chiral Catalysts Immobilized on Magnetite Nanoparticles for Asymmetric Hydrogenation of Aromatic Ketones.
Journal of the American Chemical Society
, 127
(36)
, 12486-12487.
https://doi.org/10.1021/ja053881o
Identifiers
- DOI
- 10.1021/ja053881o