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In this work, Fe 3 O 4 @SiO 2 /Si(OEt)(CH 2 ) 3 NH/CC/EDA/Cu(OAc) 2  as a copper-based nano-magnetic catalyst was prepared and characterized by Energy Dispersive X-ray analysis (EDX) and EDX-Mapping, Field-Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM), Vibrating Sample Magnetometer (VSM), Fourier transform infrared spectroscopy (FT-IR), Thermal Gravimetric Analysis (TGA) and Differential Thermal Analysis (DTA). The catalytic activity of the synthesized catalyst was investigated in the synthesis of 4,4'-(aryl methylene)bis(3-methyl-1 H -pyrazol-5-ol)s and pyrano[2,3- c ]pyrazoles by the one-pot reactions under solvent-free conditions. Short reaction times, high yields and solvent-free conditions are some benefits of the presented work.

polycyclic aromatic compounds

Synthesis of 4,4'-(Aryl Methylene)Bis(3-Methyl-1 H -Pyrazol-5-ol) Derivatives and Pyrano[2, 3- c ] Pyrazole Derivatives Using an Engineered Copper-Based Nano-Magnetic Catalyst (Fe 3 O 4 @SiO 2 /Si(OEt)(CH 2 ) 3 NH/CC/EDA/Cu(OAc) 2 )