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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 12
BKCSDE 30(12)
December 20, 2009 

Ammonium Metavanadate: A Mild and Efficient Catalyst for the Synthesis of Coumarins
Priyanka G Mandhane, Ratnadeep S Joshi, Anant R Ghawalkar, Ganesh R Jadhav, Charansingh H Gill*
Ammonium metavanadate, 4-Methyl-2H-chromen-2-one, β-Ketoester Pechmann condensation
A mild and efficient method has been developed for condensation of substituted phenol with β-ketoester in the presence of catalytic amount of ammonium metavanadate (10 mol%) at ambient temperature to afford the corresponding substituted 4-methyl-2H-chromen-2-one in high yields under mild conditions. Utilization of commercially available inexpensive catalyst makes this manipulation very interesting from an economic perspective.
2969 - 2972
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