Synthesis of 1, 4- Dihydropyrano [2, 3-c] pyrazole Derivatives with no Catalyst Under Ultrasound Irradiation
A series of 6-amino-4-aryl-5-cyano-3-methyl-1-phenyl-1, 4-dihydropyrano [2, 3-c]pyrazoles were synthesized in 84%-95% yields by the condensation of aromatic aldehydes, malononitrile with 3-methyl-1-phenyl-2-pyrazolin -5-one with no catalyst under ultrasound irradiation.
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2005-01-01
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| Series: | E-Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2005/753642 |