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<p>A Propionic acid treated Zr-based metal-organic framework (MOF-808PA) was engineered as a highly efficient and recyclable heterogeneous catalyst in transforming amines with CO<sub>2</sub> as a C1 source to formylation products. PXRD, FTIR, FE-SEM, EDS, XPS, BET, TGA, ICP-OES, NH<sub>3</sub>-TPD and CHNO techniques were used to characterize the MOF-808PA catalyst. With the green hydride donor, dimethylamine borane (DMAB) in place the catalytic system allowed the free and smooth conversion of a broad variety of cyclic, aliphatic, and aromatic amines to the corresponding formamide under optimum conditions in a high-pressure reactor. One of the tested materials was MOF-808PA, which was observed to work in all the reactions giving good-excellent yields. Polar solvents and especially the 1,4-dioxane solvent are easy to use in increasing the catalytic efficiency owing to increased solubility and activation of reactants. This methodology avoids the use of co-catalysts and silane additives and operates under mild conditions, delivering a more practical and efficient alternative to existing MOF-808 catalytic systems. The catalyst showed a high level of stability and it could be reused five times consecutively without any perceptible activity decrease. The research introduces a method on the CO<sub>2</sub>-based amine formylation that is sustainable, powerful and practical.</p> Graphical Abstract <p></p>

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Efficient CO2 Based N-Formylation of Amines Catalysed by MOF-808PA to Synthesize Formamides

  • 期刊论文

  • 发表日期：

    2026年6月15日

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  • Manisha S. Sapate,
  • Shraddha S. Joshi,
  • Bhalchandra M. Bhanage

摘要

A Propionic acid treated Zr-based metal-organic framework (MOF-808PA) was engineered as a highly efficient and recyclable heterogeneous catalyst in transforming amines with CO2 as a C1 source to formylation products. PXRD, FTIR, FE-SEM, EDS, XPS, BET, TGA, ICP-OES, NH3-TPD and CHNO techniques were used to characterize the MOF-808PA catalyst. With the green hydride donor, dimethylamine borane (DMAB) in place the catalytic system allowed the free and smooth conversion of a broad variety of cyclic, aliphatic, and aromatic amines to the corresponding formamide under optimum conditions in a high-pressure reactor. One of the tested materials was MOF-808PA, which was observed to work in all the reactions giving good-excellent yields. Polar solvents and especially the 1,4-dioxane solvent are easy to use in increasing the catalytic efficiency owing to increased solubility and activation of reactants. This methodology avoids the use of co-catalysts and silane additives and operates under mild conditions, delivering a more practical and efficient alternative to existing MOF-808 catalytic systems. The catalyst showed a high level of stability and it could be reused five times consecutively without any perceptible activity decrease. The research introduces a method on the CO2-based amine formylation that is sustainable, powerful and practical.

Graphical Abstract