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Sulfonamide-Functionalized Porous Organic Framework as an Efficient Heterogeneous Acid Catalyst for One-Pot Preparation of 1,8-Dioxooctahydroxanthenes

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RUSSIAN JOURNAL OF ORGANIC CHEMISTRY
卷 57, 期 12, 页码 2002-2009

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MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1070428021120162

关键词

covalent organic framework (COF); nanoporous; melamine; terephthalaldehyde; acid catalyst

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The sulfonamide-functionalized COF-SO3H, prepared as an acidic porous catalyst, showed high efficiency, short reaction time, simple operation method, solvent-free conditions, environmental friendliness, easy separation, and recyclability for the one-pot preparation of 1,8-dioxooctahydroxanthene derivatives.
Herein, we report the sulfonamide-functionalized covalent organic framework (COF-SO3H), prepared by condensation of melamine and terephthalaldehyde and subsequent sulfonation, as an acidic porous catalyst for the one-pot preparation of 1,8-dioxooctahydroxanthene derivatives at 90 degrees C under solvent-free con-ditions. The catalyst was characterized by FT-IR, EDX, TGA, SEM, and BET data. It offers various advantages such as high efficiency, short reaction time, simple operation method, solvent-free conditions, environmental friendliness, easy separation, and recyclability.

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