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<p>This study explores development and using a novel two-dimensional metal-organic framework (2D MOF) as a heterogeneous catalyst in organic synthesis. The phosphonocarboxylic acid <i>m</i>-PO<sub>3</sub>CH<sub>2</sub>C<sub>6</sub>H<sub>4</sub>CO<sub>2</sub>H (MPB) has been employed in synthesizing a metal carboxyarylphosphonate. The 2D MOF [Cu(H<sub>2</sub>O)(<i>m</i>-PO<sub>3</sub>CH<sub>2</sub>C<sub>6</sub>H<sub>4</sub>CO<sub>2</sub>H)]<sub>n</sub> was synthesized in both crystal (Cu-MPB) and nanostructure (Cu-MPB′) forms, characterized by X-ray single crystallography, SEM, TGA, FT-IR, PXRD, EDX, Mapping, and nitrogen adsorption-desorption, and employed for the efficient green synthesis of tetrahydrobenzo[b]pyrans. The crystal structure features alternating inorganic and organic layers. The organic layers have supramolecular dimers of carboxylic acid groups, two molecules bonded to two inorganic layers. Tetrahydrobenzo[b]pyran yield optimization conditions were determined with water/ethanol as solvents, using a catalyst loading of 0.06&#xa0;g for 95% yields. The fabricated catalyst exhibited exceptional catalytic performance, wide applicability to different aldehyde substrates, and remarkable reusability, achieving high yields for as many as seven cycles post-reaction. In comparison to earlier catalytic systems, the compound Cu-MPB′ showed enhanced efficiency and recyclability. These results underscore the promise of this innovative 2D MOF in promoting sustainable and effective organic synthesis.</p>

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Design and catalytic performance of a novel two-dimensional copper metal-organic framework for green synthesis of tetrahydrobenzo[b]pyrans

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月3日

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  • Ehsan Joukar Bahaderani,
  • Khosro Mohammadi,
  • Payam Hayati,
  • Jan Janczak

摘要

This study explores development and using a novel two-dimensional metal-organic framework (2D MOF) as a heterogeneous catalyst in organic synthesis. The phosphonocarboxylic acid m-PO3CH2C6H4CO2H (MPB) has been employed in synthesizing a metal carboxyarylphosphonate. The 2D MOF [Cu(H2O)(m-PO3CH2C6H4CO2H)]n was synthesized in both crystal (Cu-MPB) and nanostructure (Cu-MPB′) forms, characterized by X-ray single crystallography, SEM, TGA, FT-IR, PXRD, EDX, Mapping, and nitrogen adsorption-desorption, and employed for the efficient green synthesis of tetrahydrobenzo[b]pyrans. The crystal structure features alternating inorganic and organic layers. The organic layers have supramolecular dimers of carboxylic acid groups, two molecules bonded to two inorganic layers. Tetrahydrobenzo[b]pyran yield optimization conditions were determined with water/ethanol as solvents, using a catalyst loading of 0.06 g for 95% yields. The fabricated catalyst exhibited exceptional catalytic performance, wide applicability to different aldehyde substrates, and remarkable reusability, achieving high yields for as many as seven cycles post-reaction. In comparison to earlier catalytic systems, the compound Cu-MPB′ showed enhanced efficiency and recyclability. These results underscore the promise of this innovative 2D MOF in promoting sustainable and effective organic synthesis.