ISSN

0974-4150 (Online)
0974-4169 (Print)


Author(s): Kiran Patil1, Vasant Helavi

Email(s): kiranpatil277@gmail.com

DOI: 10.5958/0974-4150.2018.00087.1   

Address: Kiran Patil1, 2*, Vasant Helavi2
1Department of Chemistry, Dr. Ghali College, Gadhinglaj, Maharashtra 416502, India
2Department of Chemistry, Rajaram College, Kolhapur, Maharashtra 416004, India
*Corresponding Author

Published In:   Volume - 11,      Issue - 2,     Year - 2018


ABSTRACT:
Chitosan Hydrogel was used for a highly efficient one-pot, four component synthesis of 6-amino-3-methyl-5-cyano-4-aryl-1, 4-dihydropyrano [2, 3-c] pyrazoles from aromatic aldehydes, malononitrile, ethyl acetoacetate and hydrazine hydrate in water as solvent under classical heating. Using microwave heating, reaction times were shortened from 1hr to 2 min. The advantages of this method includes the use of water as a green solvent ,use of recyclable chitosan hydrogel as a green catalyst, short reaction time, easy work up, and excellent yields.


Cite this article:
Kiran Patil, Vasant Helavi. Synthesis of Pyranopyrazoles by using Chitosan Hydrogel as a green and recyclable catalyst. Asian J. Research Chem. 2018; 11(2):477-484. doi: 10.5958/0974-4150.2018.00087.1

Cite(Electronic):
Kiran Patil, Vasant Helavi. Synthesis of Pyranopyrazoles by using Chitosan Hydrogel as a green and recyclable catalyst. Asian J. Research Chem. 2018; 11(2):477-484. doi: 10.5958/0974-4150.2018.00087.1   Available on: https://www.ajrconline.org/AbstractView.aspx?PID=2018-11-2-47


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DOI: 10.5958/0974-4150 

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