Citation: Ravi S. Balaskar, Sandip N. Gavade, Madhav S. Mane, Bapurao B. Shingate, Murlidhar S. Shingare, Dhananjay V. Mane. Greener approach towards the facile synthesis of 1,4-dihydropyrano[2,3-c]pyrazol-5-yl cyanide derivatives at room temperature[J]. Chinese Chemical Letters, ;2010, 21(10): 1175-1179. doi: 10.1016/j.cclet.2010.06.013 shu

Greener approach towards the facile synthesis of 1,4-dihydropyrano[2,3-c]pyrazol-5-yl cyanide derivatives at room temperature

a Organic Research Laboratory, S. C. S. College, Omerga 413 606, (MS), India;
b Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431 004, (MS), India

Received Date: 24 February 2010

Fund Project: The authors are thankful to The Head,Department of Chemistry,Dr.Babasaheb Ambedkar Marathwada University,Aurangabad,for providing laboratory facilities.

This report describes triethylammonium acetate (TEAA) ionic liquid catalyzed one pot synthesis of 6-amino-4-aryl-5-cyano-3-methyl-1-phenyl-1, 4-dihydropyrano[2, 3-c]pyrazoles by the reaction of aromatic aldehyde, malononitrile and 3-methyl-1-phenyl-2-pyrazolin-5-one at room temperature. TEAA plays dual role as reaction media and catalyst. It can also be easily recovered and reused in several runs. TEAA provides greener reaction protocol to present methodology which obviates the need of organic solvents, expensive and toxic catalyst.
- Triethylammonium acetate (TEAA),
- 1,4-Dihydropyrano[2,3-c]pyrazol-5-yl cyanides,
- Room temperature
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