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Synthesis and Characterization of Highly Substituted Pyrazoles Using Silica-Phosphoric Acid Nanoparticles as a Recoverable Heterogeneous Solid Acid Catalyst


Affiliations
1 Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran, Islamic Republic of
 

Highly substituted pyrazoles have been prepared by condensing 1,3-diketones and various hydrazine derivatives using silica-phosphoric acid nanoparticles (nano-SPA). This nano solid catalyst has been prepared by the reaction of nano silica chloride with dry phosphoric acid. This green methodology has advantages such as short reaction times, simple work-up, high efficiency, reusability of the catalyst and no use of any solvents.

Keywords

Highly Substituted Pyrazoles, Heterogeneous, Nano Silica-Phosphoric Acid, Solid Acid Catalyst.
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  • Synthesis and Characterization of Highly Substituted Pyrazoles Using Silica-Phosphoric Acid Nanoparticles as a Recoverable Heterogeneous Solid Acid Catalyst

Abstract Views: 64  |  PDF Views: 49

Authors

Abdolhamid Bamoniri
Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran, Islamic Republic of
Nahid Yaghmaeiyan
Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran, Islamic Republic of
Somayeh Khaje
Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran, Islamic Republic of

Abstract


Highly substituted pyrazoles have been prepared by condensing 1,3-diketones and various hydrazine derivatives using silica-phosphoric acid nanoparticles (nano-SPA). This nano solid catalyst has been prepared by the reaction of nano silica chloride with dry phosphoric acid. This green methodology has advantages such as short reaction times, simple work-up, high efficiency, reusability of the catalyst and no use of any solvents.

Keywords


Highly Substituted Pyrazoles, Heterogeneous, Nano Silica-Phosphoric Acid, Solid Acid Catalyst.

References