Synthesis of 7-hydroxycoumarins by Pechmann reaction using Nafion resin/silica nanocomposites as catalysts

The reaction of resorcinol with ethyl acetoacetate (Pechmann reaction) or with acrylic acid over novel Nafion resin/silica composite materials with 40 and 80 wt% of Nafion in silica produces 7-hydroxycoumarins in high yields, under mild reaction conditions in short reaction time. Other solid acid ca...

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Bibliographic Details
Published inJournal of catalysis Vol. 218; no. 2; pp. 315 - 320
Main Authors Laufer, M.C, Hausmann, H, Hölderich, W.F
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier Inc 10.09.2003
Elsevier
Subjects
Catalysis
Catalytic reactions
Chemistry
Coumarin derivatives
Exact sciences and technology
General and physical chemistry
Nafion resin/silica nanocomposite
Pechmann reaction
Solid acid catalyst
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Pechmann reaction
Coumarin derivatives
Solid acid catalyst
Nafion resin/silica nanocomposite
Ionomer
Coumarine derivatives
Pechmann reaction: Solid acid catalyst
Dispersion reinforced material
Zeolite
Oxygen heterocycle
Diphenols
Silica
Composite material
Molecular sieve
Pechmann condensation
Resorcinol
Sulfonate copolymer
Heterogeneous catalysis
Ester
Tetrafluoroethylene copolymer
Cation exchange membrane
Acetylacetone derivatives
Nanocomposite
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Summary:The reaction of resorcinol with ethyl acetoacetate (Pechmann reaction) or with acrylic acid over novel Nafion resin/silica composite materials with 40 and 80 wt% of Nafion in silica produces 7-hydroxycoumarins in high yields, under mild reaction conditions in short reaction time. Other solid acid catalysts were tested for comparison reasons.
ISSN:0021-9517
1090-2694
DOI:10.1016/S0021-9517(03)00073-3