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Ammoniummetavanadate: an effective catalyst for synthesis of dihydropyrimidinones under solvent-free conditions

Author(s): Nana V.Shitole, Balasaheb V.Shitole, Gopal K.Kakde,Murlidhar S.Shingare

Ammonium metavanadate (NH4VO3) is an inexpensive, efficient and mild catalyst for the three-component condensation reaction of aldehydes, â- ketoester and urea/thiourea. Thismethod offers several advantages including relatively short reaction times, solvent-free,easywork-up procedure and good to high yields of product

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