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Synlett 2003(10): 1509-1511
DOI: 10.1055/s-2003-40828
DOI: 10.1055/s-2003-40828
LETTER
© Georg Thieme Verlag Stuttgart ˙ New York
Clay Catalysed Synthesis of Dihydropyrimidinones under Solvent-free Conditions
Further Information
Received
4 November 2002
Publication Date:
24 July 2003 (online)
Publication History
Publication Date:
24 July 2003 (online)
Abstract
A fast and high yielding one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones from β-keto esters, urea and various aliphatic and aromatic aldehydes using montmorillonite KSF clay as a catalyst in solvent-free condition under microwave irradiation is described. The catalyst can also be recycled in these syntheses.
Key words
dihydropyrimidinones - montmorillonite KSF - microwave activation - solvent-free condition
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