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- W4324348519 abstract "Abstract The magnetically separable heterogeneous Nickel-Zinc ferrite (NiZnFe 2 O 4 ) catalyst was synthesized and used for the first time as an environmentally friendly reusable catalyst for the synthesis of 2-amino-4 H -chromene derivatives via a one-pot three-component condensation reaction of various salicylaldehydes and malononitrile or ethyl cyanoacetate with nitromethane or nitroethane in an ethanol at room temperature. There have been no reports of nickel zinc ferrite being used as a catalyst. The catalyst was specified by using several techniques, including DSC-TGA, FT-IR, X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), BET, and scanning electron microscope (SEM). The present protocol suggests some benefits, which include green reaction conditions, simple reaction work-up, short reaction time, excellent product yields, chromatography-free purification, and high efficiency of the heterogeneous catalyst. More importantly, this catalyst was recovered from the reaction mixture using a simple external magnet, and it was reused successively at least seven times without any significant loss of catalytic activity." @default.
- W4324348519 created "2023-03-16" @default.
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- W4324348519 date "2023-03-15" @default.
- W4324348519 modified "2023-10-14" @default.
- W4324348519 title "NiZnFe2O4: An eco-compatible and magnetically separable catalyst for multicomponent synthesis of 2-amino-4H-chromenes" @default.
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- W4324348519 doi "https://doi.org/10.21203/rs.3.rs-2678384/v1" @default.
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