A novel magnetic nanocomposite based on alginate/pumice: an efficientheterogeneous nanocatalyst for synthesis of [۱,۲,۴]triazolo[۱,۵-a] pyrimidines

In this study, a facile and efficient method for the synthesis of ۵-amino-۷-aryl-۴,۷-dihydro-[۱,۲,۴]triazolo[۱,۵-a]pyrimidine-۶-carbonitrile based on alginate/pumice copper-catalyzedmulticomponent reaction of a triazole with aryl aldehyde is reported in the presence ofmalononitrile in DMF. A new heterogeneous and recyclable nanocatalyst based on copper iodidesupported on functionalized pumice has been introduced for this target. The synthetic process ofthe mentioned nanocatalyst, Cu@Fe۳O۴/alginate/pumice, has been described[۱-۳]. TEM, SEM,EDS, FTIR, ICP, and XRD afforded the Cu@Fe۳O۴/alginate/pumice characterization. The surfacestructure of the materials was confirmed using Fourier transform infrared (FTIR) spectroscopy.