Journal
ARKIVOC
Volume -, Issue -, Pages 34-41Publisher
ARKAT USA INC
DOI: 10.3998/ark.5550190.0009.f04
Keywords
Dihydropyrimidinone; acylal; solvent-free; Biginelli reaction; heteropoly acid; zinc chloride
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Funding
- Faculty of Research of Shahid Bahonar University
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A novel version of the Biginelli reaction using an acylal as a masked carbonyl functionality together with ethyl acetoacetate and urea or thiourea to give dihydropyrimidinones is reported. The reaction is catalyzed by 12-tungstophosphoric acid (PW), 12-molybdophosphoric acid (PMo) or zinc chloride and performed in one-pot under solvent-free conditions.
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