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Title
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Synthesis and characterization of [Fe3O4@CQDs@Si(CH2)3NH2@CC@EDA@SO3H]+Cl− and Fe3O4@CQDs@Si(CH2)3NH2@CC@EDA@Cu nanocatalyts and their application in the synthesis of 5-amino-1,3-diphenyl-1H-pyrazole-4-carbonitrile and 1-(morpholino(phenyl)methyl)naphthalen-2-ol derivatives
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Type
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JournalPaper
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Keywords
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The current study provides a synthetic approach to prepare two novels magnetic Fe3- O4@CQDs based catalyst. Accordingly, an ionic-liquid based and copper-based nano-magnetic solid acid catalyst, namely, [Fe3O4@CQDs@Si(CH2)3NH2@CC@EDA@SO3H]+Cl and Fe3- O4@CQDs@Si(CH2)3NH2@CC@EDA@Cu were synthesized. Carbon quantom dot (CQD), as a green and sustainable support, was used to coating the nano-Fe3O4 instead of conventionl SiO2. Various techniques, in sequence, were used to characterize the as-synthesized catalysts, including infrared (FT-IR), field emission scanning electron microscopy (FESEM), energy-dispersive xray spectroscopy (EDX), thermal gravimetric analysis (TGA), differential thermal analysis (DTA), and vibrating sample magnetometery (VSM). The activity of the as-prepared catalysts was examined in the synthesis of 5-amino-1,3-diphenyl-1H and (morpholino(phenyl)methyl) deriva-tives. Interestingly, the pyrazole ring formation is followed by an anomeric effect assisted oxidation reacti
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Abstract
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The current study provides a synthetic approach to prepare two novels magnetic Fe3- O4@CQDs based catalyst. Accordingly, an ionic-liquid based and copper-based nano-magnetic solid acid catalyst, namely, [Fe3O4@CQDs@Si(CH2)3NH2@CC@EDA@SO3H]+Cl and Fe3- O4@CQDs@Si(CH2)3NH2@CC@EDA@Cu were synthesized. Carbon quantom dot (CQD), as a green and sustainable support, was used to coating the nano-Fe3O4 instead of conventionl SiO2. Various techniques, in sequence, were used to characterize the as-synthesized catalysts, including infrared (FT-IR), field emission scanning electron microscopy (FESEM), energy-dispersive xray spectroscopy (EDX), thermal gravimetric analysis (TGA), differential thermal analysis (DTA), and vibrating sample magnetometery (VSM). The activity of the as-prepared catalysts was examined in the synthesis of 5-amino-1,3-diphenyl-1H and (morpholino(phenyl)methyl) deriva-tives. Interestingly, the pyrazole ring formation is followed by an anomeric effect assisted oxidation reaction even at room temperature. Optimum reaction conditions of morpholino(phenyl)methyl) derivative were determined via design of experiment (DOE).
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Researchers
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Ardeshir Khazaei (Third Researcher), jaber yousefi-seyf (Second Researcher), negin sarmasti (First Researcher)
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