Environmentally positive and energy proficient synthesis of coumarin by the Pechmann reaction via microwave irradiation

Coumarins have been synthesized by microwave irradiation in solvent free reaction condition, and excellent yields of coumarins have been obtained with high purity. Pechmann method is a revere reaction which is one of the easy and forthright scheme used to produce coumarins. IR and NMR spectroscopy h...

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Bibliographic Details
Published in:Indian journal of chemical technology 2017-07, Vol.24 (4), p.447
Main Authors: Monga, Paramjeet Kaur, Sharma, Dipak, Bhasin, Sheetal, Dubey, Arti
Format: Article
Language:English
Subjects:
Catalysis
Chemical synthesis
Coumarin
Infrared spectroscopy
Irradiation
Magnetic resonance spectroscopy
NMR spectroscopy
Oxalic acid
Phenols
Substitutes
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Summary:Coumarins have been synthesized by microwave irradiation in solvent free reaction condition, and excellent yields of coumarins have been obtained with high purity. Pechmann method is a revere reaction which is one of the easy and forthright scheme used to produce coumarins. IR and NMR spectroscopy have been used to confirm the successful synthesis of coumarins by Pechmann reaction. Use of commercially accessible low-cost catalyst makes this procedure very fascinating from a cost-effective point of view. An easygoing and capable microwave synthesis technique has been evolved for condensation of β-ketoester and substituted phenol in the presence of catalytic quantity of oxalic acid at extensive temperature range to give the resultant substituted 4-methyl-2H-chromen-2-one in elevated output.
ISSN:0971-457X
0975-0991