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Polymer-supported catalysts: enantioselective hydrogenation and hydrogen transfer reduction
Christine Saluzzo1, Thierry Lamouille, Damien Hérault
1Laboratoire de Catalyse et Synthèse Organique, UMR 5622, Université Claude Bernard Lyon 1, CPE, 43 Bd. du 11 Novembre 1918, 69622 Villeurbanne Cedex, France.
Bioorganic & Medicinal Chemistry Letters
|June 28, 2002
Summary
Researchers explored heterogenized catalysts for asymmetric reactions, including hydrogen transfer reduction and hydrogenation. Catalyst recycling was investigated for these novel catalytic systems.
Area of Science:
- Catalysis
- Organic Chemistry
- Polymer Science
Background:
- Heterogenized catalysts offer advantages in separation and recycling compared to homogeneous catalysts.
- Asymmetric synthesis is crucial for producing enantiomerically pure compounds in pharmaceuticals and fine chemicals.
Purpose of the Study:
- To investigate the efficacy of different heterogenized catalysts in asymmetric reactions.
- To explore the recyclability of these catalytic systems.
Main Methods:
- Asymmetric hydrogen transfer reduction using amino alcohols derived from poly((S)-glycidyl methacrylate-co-ethylene glycol dimethacrylate or divinylbenzene)).
- Asymmetric hydrogenation employing BINAP (2,2'-bis(diphenylphosphino)-1,1'-binaphthyl) ligands grafted onto polyethylene glycol (PEG) or copolymerized with isocyanates.
Main Results:
- Successful application of heterogenized catalysts in asymmetric hydrogen transfer reduction and hydrogenation reactions.
- Demonstration of catalyst recycling attempts for the developed systems.
Conclusions:
- Heterogenized catalysts, including polymer-supported amino alcohols and BINAP-PEG/copolymer ligands, are viable for asymmetric synthesis.
- Further development is needed to optimize catalyst recycling for industrial applications.