Phosphotungstic Acid: An Efficient Catalyst for the Aqueous Phase Synthesis of Bis-(4-hydroxycoumarin-3-yl)methanes

Phosphotungstic Acid: An Efficient Catalyst for the Aqueous Phase Synthesis of Bis-(4-hydroxycoumarin-3-yl)methanes

In this present work, we report that phosphotungstic acid provides a simple, efficient and environmentally benign route is a two-component one-pot domino Knoevenagel-type condensation/Michael reaction between 4-coumarin derivative and an aldehyde in water as a solvent in shorter duration with high y...

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Veröffentlicht in:Catalysis letters 2010-02, Vol.134 (3-4), p.303-308
Hauptverfasser: Singh, Prashant, Kumar, Pradeep, Katyal, Anju, Kalra, Rashmi, Dass, Sujata K, Prakash, Satya, Chandra, Ramesh
Format: Artikel
Sprache:eng
Schlagworte:
Aldehydes
Catalysis
Chemical synthesis
Chemistry
Chemistry and Materials Science
Coumarin
Exact sciences and technology
General and physical chemistry
Green technology
Industrial Chemistry/Chemical Engineering
Methane
Michael reaction
Organometallic Chemistry
Phosphates
Physical Chemistry
Plants
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Tungsten compounds
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Zusammenfassung:In this present work, we report that phosphotungstic acid provides a simple, efficient and environmentally benign route is a two-component one-pot domino Knoevenagel-type condensation/Michael reaction between 4-coumarin derivative and an aldehyde in water as a solvent in shorter duration with high yields.
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-009-0239-x