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Nano-Ferrite Znfe2o4 As Efficient and Re-Usable Catalyst For the Synthesis of 4h-Chromenes and 4h-Pyrano[2,3-C] Pyrazoles
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نویسنده
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Nejat Razieh
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منبع
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Inorganic Chemistry Research - 2022 - دوره : 6 - شماره : 1 - صفحه:10 -16
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چکیده
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Nano-magnetic ferrite znfe2o4 among other magnetic nanoparticles include fe2o3, fe3o4, ni(0.7)zn(0.3)fe2o4 and mn(0.7)zn(0.3)fe2o4 was explored as an efficient catalyst for the synthesis of various 4h-chromenes and 4h-pyrano[2,3-c]pyrazoles in etoh/h2o (2:1) via an easy and green procedure. the desired products were obtained in high yields via a three-component reaction between aromatic aldehydes with malononitrile and 5,5-dimethyl-cyclohexane-1,3-dione or 3-methyl-1-phenyl-2-pyrazolin-5-one at room temperature. the structure of this catalyst was fully characterized via fourier transform infrared spectroscopy, xrd, sem, tem, edax, and vsm. the employed nanocatalyst was easily recovered using a magnetic field and reused ten times (in subsequent runs) without observation a significant decrease in activity.
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کلیدواژه
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Nano-Magnetic Ferrite ,Chromenes ,Pyrazoles ,Znfe2o4
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آدرس
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Kosar University Of Bojnord, Faculty Of Sciences, Chemistry Department, Iran
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پست الکترونیکی
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organochem_nejat@yahoo.com
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Authors
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