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Immobilization of Chiral Ligands on Polymer Fibers by Electron Beam Induced Grafting and Applications in Enantioselective Catalysis
- Source :
- Organic Letters; August 2001, Vol. 3 Issue: 16 p2551-2554, 4p
- Publication Year :
- 2001
-
Abstract
- <UFIGR ID="ol016212yn00001">Styrenic TADDOL and <SCP>l</SCP>-prolinol-derived monomers were immobilized on polyethylene fibers by electron beam induced preirradiation grafting using styrene as comonomer. The polymer-supported chiral ligands were utilized as catalysts in the asymmetric addition of diethylzinc to benzaldehyde. Fiber-bound titanium TADDOLate gave a quantitative conversion of benzaldehyde to 1-phenylpropan-1-ol in a 97:3 S/R enantiomeric ratio. The catalyst was successfully regenerated and employed in subsequent reactions with retention of high enantioselectivities.
Details
- Language :
- English
- ISSN :
- 15237060 and 15237052
- Volume :
- 3
- Issue :
- 16
- Database :
- Supplemental Index
- Journal :
- Organic Letters
- Publication Type :
- Periodical
- Accession number :
- ejs1161437