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<p>A highly effective and recyclable heterogeneous catalyst, Ni-doped MXene, was developed for the synthesis of <i>N</i>-arylbenzamides from arene halides with arene amines, employing Co<sub>2</sub>(CO)<sub>8</sub> as a solid CO surrogate. MXene, a novel two-dimensional nanomaterial, offers a high surface area and numerous active sites, making it an excellent support for nickel dispersion. Utilizing Co<sub>2</sub>(CO)<sub>8</sub> as an inexpensive, less hazardous, and low-melting alternative to gaseous CO represents a significant advancement over conventional methodologies. The catalyst exhibited remarkable yields across a broad substrate scope, including both electron-withdrawing and electron-donating groups. The influence of solvent, catalyst loading, and reaction parameters was systematically studied to optimize the reaction conditions. Comprehensive characterization of both fresh and recycled Ni-MXene catalysts was performed using XRD, XPS, BET, and ICP-OES techniques. Furthermore, the catalyst is readily recoverable and can be reused for up to five cycles without a significant loss of reactivity. These analyses confirmed a uniform dispersion of nickel across the MXene surface, with the formation of well-defined Ni nanoclusters averaging approximately 4&#xa0;nm in diameter.</p> Graphical abstract <p></p>

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Heterogeneous Ni-MXene nanocatalyst for amino carbonylation of arene halides with arene amines using Co2(CO)8 as solid CO source

  • 期刊论文

  • 发表日期：

    2026年1月22日

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  • Snehal A. Jawale,
  • Prafull A. Jagtap,
  • Bhalchandra M. Bhanage

摘要

A highly effective and recyclable heterogeneous catalyst, Ni-doped MXene, was developed for the synthesis of N-arylbenzamides from arene halides with arene amines, employing Co2(CO)8 as a solid CO surrogate. MXene, a novel two-dimensional nanomaterial, offers a high surface area and numerous active sites, making it an excellent support for nickel dispersion. Utilizing Co2(CO)8 as an inexpensive, less hazardous, and low-melting alternative to gaseous CO represents a significant advancement over conventional methodologies. The catalyst exhibited remarkable yields across a broad substrate scope, including both electron-withdrawing and electron-donating groups. The influence of solvent, catalyst loading, and reaction parameters was systematically studied to optimize the reaction conditions. Comprehensive characterization of both fresh and recycled Ni-MXene catalysts was performed using XRD, XPS, BET, and ICP-OES techniques. Furthermore, the catalyst is readily recoverable and can be reused for up to five cycles without a significant loss of reactivity. These analyses confirmed a uniform dispersion of nickel across the MXene surface, with the formation of well-defined Ni nanoclusters averaging approximately 4 nm in diameter.

Graphical abstract