-Fe2O3@SiO2-PW12 nanoparticles: Highly efficient catalysts for the synthesis of pyrazoline derivatives

الموضوعات : Iranian Journal of Catalysis

Hamid Aliyan ¹ , Razieh Fazaeli ² , Nafiseh Tajsaeed ³

1 - Department of Chemistry, Islamic Azad University, Shahreza Branch, Shahreza, Iran.
2 - Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran.
3 - Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran.

تاريخ الإرسال : 05 الخميس , ربيع الأول, 1434 تاريخ التأكيد : 14 الأربعاء , شوال, 1434 تاريخ الإصدار : 22 السبت , رجب, 1434

الکلمات المفتاحية: Heterogeneous catalysis, Silica-encapsulated -Fe2O3 nanoparticles, Pyrazoline, Phenyl hydrazine, Chalcone,

ملخص المقالة :

A new type of magnetically-recoverable catalyst was synthesized by the immobilization of H3PW12O40 on the surface of silica-encapsulated -Fe2O3 nanoparticles. A series of novel 1,3,5-triaryl pyrazoline derivatives has been synthesized by the reaction of chalcone and phenylhydrazine in the presence of the -Fe2O3@SiO2-PW12nanoparticles, in high yields. The structures of compounds obtained were determined by IR and 1H NMR spectra. -Fe2O3@SiO2-PW12was recycled and no appreciable change in activity was noticed after three cycles.