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- W4207014619 abstract "Abstract Wood ash is a naturally alkaline derived substance containing organic and inorganic constituents. This study investigates the catalytic activity of wood ash as a heterogeneous catalyst for the synthesis of benzochromene derivatives. Several wood ash catalysts, comprising calcium- and potassium-rich carbonates, were prepared from different natural resources under various combustion temperatures. The prepared catalysts were characterized by Fourier transform infrared, scanning electron microscopy, energy dispersive X-ray analysis, transmission electron microscopy, and X-ray diffraction techniques. Catalytic efficiency of the resultant catalysts was tested in the synthesis of benzochromene derivatives. The experimental studies clarified that the catalyst prepared at 850 °C could efficiently expedite the formation of three-component synthesis of benzochromene derivatives in water at 80 °C with high yields. Indeed, alkali, alkaline metal, and metal oxides such as Al 2 O 3 , SiO 2 , MgO, CaO, and Fe 2 O 3 , are widely utilized as both catalyst and catalyst support in the heterogeneous catalytic processes. The prepared wood ash catalysts (possessing metal oxides, e.g., CuO, Al 2 O 3 , SiO 2 , and CaO) could effectively prompt the electrophilic activity of the carbonyl groups during the nucleophilic attack intermediate, enhancing the efficiency of the reactions." @default.
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- W4207014619 date "2022-01-21" @default.
- W4207014619 modified "2023-10-03" @default.
- W4207014619 title "Wood ash biocatalyst as a novel green catalyst and its application for the synthesis of benzochromene derivatives" @default.
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- W4207014619 doi "https://doi.org/10.1038/s41598-022-05133-x" @default.
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