Journal article
A Materials Approach to the Dual-Site Isolation of Catalysts Bonded to Linear Polymers and Small, Ionic Molecules for Use in One-Pot Cascade Reactions
Advanced materials (Weinheim), Vol.20(21), pp.4195-NA
09/29/2008
DOI: 10.1002/adma.200801599
Abstract
Materials to the dual-site isolation of catalysts bonded to linear polymers and small and ionic molecules, were use in one-pot cascade reactions. The acid catalysts were used to convert an acetal to an aldehyde, while the Baylis-Hillman reaction required catalysis by 4-dimethyaminopyridine (DMAP). The results show that ionic molecules can be placed on one side of a PDMS membrane and not diffuse through it, while polymers can also be site-isolated due to small flux through PDMS. The lower flux of LPDMAP and polystyrene shows that they cannot be site-isolated using PDMS and that this is a general method for site-isolation of catalysts bonded to linear polymers. An increase in the thickness of the PDMS wall to 275μm results in a decrease in flux such that after 186 hr at room temperature the ratio of aldehyde on the exterior is 0.47.
Details
- Title: Subtitle
- A Materials Approach to the Dual-Site Isolation of Catalysts Bonded to Linear Polymers and Small, Ionic Molecules for Use in One-Pot Cascade Reactions
- Creators
- A. Lee MillerNed B Bowden
- Resource Type
- Journal article
- Publication Details
- Advanced materials (Weinheim), Vol.20(21), pp.4195-NA
- DOI
- 10.1002/adma.200801599
- ISSN
- 0935-9648
- eISSN
- 1521-4095
- Language
- English
- Date published
- 09/29/2008
- Academic Unit
- Chemistry
- Record Identifier
- 9984216601402771
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