COPPER CHROMITE NANOPARTICLES AS AN EFFICIENT AND RECYCLABLE CATALYST FOR FACILE SYNTHESIS OF 4,4'-(ARYLMETHANEDIYL)BIS(3-METHYL-1<i>H</i>-PYRAZOL-5-OL) DERIVATIVES

Аннотация

In this study, pure spinel nanoparticles of copper chromite (CuCr₂O₄) were synthesized by coprecipitation method. These nanoparticles were characterized by X-ray diffraction, scanning electron microscopy, and FTIR. CuCr₂O₄ nanoparticles were found to be an efficient catalyst for the synthesis of  4,4'-(arylmethanediyl)bis(3-methyl-1H-pyrazol-5-ols) via pseudo-five-component reaction of aldehydes, hydrazine hydrate, and ethyl acetoacetate. The present methodology offers several advantages such as excellent yields, simple procedure, and mild conditions. The catalyst can be reused at least five times without any obvious change in its catalytic activity.

How to Cite
Safaei-Ghomi, J.; Khojastehbakht-Koopaei, B.; Zahedi, S. Chem. Heterocycl. Compd. 2015, 51, 34. [Khim. Geterotsikl. Soedin. 2015, 51, 34.]

For this article in the English edition see DOI 10.1007/s10593-015-1656-y