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• W2800703886 abstract "Fe 3 O 4 @MCM‐41@Zr‐MNPs modified with piperazine is easily prepared and characterized using Fourier transform infrared spectroscopy (FT‐IR), X‐ray powder diffraction (XRD), N 2 adsorption–desorption, Transmission electron microscopy (TEM), Energy‐dispersive X‐ray (EDX), Vibrating sample magnetometry (VSM) and Thermogravimetric analysis (TGA) techniques. The characterization results showed that Zr highly dispersed in the tetrahedral environment of silica framework and piperazine is successfully attached to the surface of the nanocatalyst in connection with zirconium. The prepared nanosized reagent (10–30 nm), shows excellent catalytic activity in the synthesis of tetrahydro‐4 H ‐chromene and pyrano[2,3‐ d ]pyrimidinone derivatives. All reactions are performed under mild and completely heterogeneous reactions conditions in high yields during short reaction times. On the other hand and due to its superparamagnetic nature the catalyst can be easily separated by the application of an external magnetic field and reused for several times." @default.
• W2800703886 created "2018-05-17" @default.
• W2800703886 creator A5006046941 @default.
• W2800703886 creator A5081969540 @default.
• W2800703886 creator A5088384354 @default.
• W2800703886 date "2018-05-04" @default.
• W2800703886 modified "2023-10-18" @default.
• W2800703886 title "Introduction of organic/inorganic Fe₃O₄@MCM-41@Zr-piperazine magnetite nanocatalyst for the promotion of the synthesis of tetrahydro-4<i>H</i>-chromene and pyrano[2,3-<i>d</i>]pyrimidinone derivatives" @default.
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• W2800703886 doi "https://doi.org/10.1002/aoc.4371" @default.
• W2800703886 hasPublicationYear "2018" @default.
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