Jugraj Jatav*, Ruchi Gupta, Santosh Kumar Bhardwaj
Department of Chemistry, Jiwaji University, 474011 Gwalior, M.P. India
A B S T R A C T
Zn/Al hydrotalcite acts as an efficient heterogeneous basic catalyst for the synthesis of 4H-pyrano[2,3-c] pyrazoles via a multi-component reaction of hydrazine hydrate, ethyl acetoacetate, aldehydes, and malononitrile in ethanol at ambient temperature. The hydrotalcite catalyst was easily separated from the reaction mixture and can be reused.
Keywords: Heterogeneous catalyst, hydrotalcite, multi-component reactions.