Polymer-supported Ti and Al Lewis acids as catalysts in Diels-Alder reactions

Different polymer-supported Ti and Al Lewis acid catalysts have been prepared. All of them show an appreciable catalytic activity for the reaction between methacrolein and cyclopentadiene. The exo/endo selectivity is increased relative to the uncatalyzed reaction and is slightly higher for supported...

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Bibliographic Details
Published in:Reactive polymers 1992, Vol.18 (3), p.237-248
Main Authors: Luis, S.V., Burguete, M.I., Ramirez, N., Mayoral, J.A., Cativiela, C., Royo, A.J.
Format: Article
Language:English
Subjects:
Applied sciences
Diels-Alder reactions
Exact sciences and technology
Lewis acid catalysis
Organic polymers
Physicochemistry of polymers
polymer-supported catalysts
polystyrene-divinylbenzene
Properties and characterization
Special properties (catalyst, reagent or carrier)
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Summary:Different polymer-supported Ti and Al Lewis acid catalysts have been prepared. All of them show an appreciable catalytic activity for the reaction between methacrolein and cyclopentadiene. The exo/endo selectivity is increased relative to the uncatalyzed reaction and is slightly higher for supported Al Lewis acids. Recycling of the polymers has been studied. In general, polymer-bound Ti catalysts seem to be more effective in terms of activity and recycling.
ISSN:0923-1137
1873-1678
DOI:10.1016/0923-1137(92)90654-K