Construction of a magnetic-mesoporous palladium nanocomposite as a novel reusable catalyst for synthesis of heteroaryl amides via aminocarbonylation reactions

<p>The synthesis of amide derivatives is crucial for medicinal and biological applications, yet it presents a considerable challenge for chemists aiming to adhere to green chemistry principles. To address this, we introduce the Fe₃O₄@MCM-41-Creatine-Pd(0) nanocomposite as an effective and eco-friendly catalyst for synthesizing heterocyclic amides through a three-component aminocarbonylation reaction that combines aryl and heteroaryl iodides, Cr(CO)₆, and heterocyclic amines. The Fe₃O₄@MCM-41-Creatine-Pd(0) catalyst is made from readily available materials and has been characterized using various advanced techniques, including FT-IR, XRD, and SEM. It demonstrates exceptional catalytic activity, achieving high efficiency and selectivity, all while employing the environmentally friendly ChCl-Urea solvent system. Our approach successfully synthesizes 22 distinct derivatives of heterocyclic amides, showcasing rapid reaction times and high yields. Thus, it exemplifies innovation in amide synthesis within a framework of green chemistry. This work marks a significant advancement in amide synthesis and reveals a gap in the literature, as no prior studies have reported the synthesis of 22 different heterocyclic amide derivatives.</p> <p></p><p><b>High Efficiency and Selectivity:</b> The method provides an efficient route for synthesizing heterocyclic amide derivatives with high yields and selectivity, offering a robust solution for complex chemical transformations.</p><p><b>Sustainable Green Chemistry:</b> The use of the ChCl-Urea green solvent system minimizes environmental impact, aligning with green chemistry principles by reducing hazardous solvents and waste.</p><p><b>Mild Reaction Conditions:</b> The process operates under mild conditions, which reduces energy consumption, lowers operational costs, and enhances safety in both laboratory and industrial settings.</p><p><b>Exceptional Catalyst Reusability:</b> The Fe₃O₄@MCM-41-Creatine-Pd(0) nanocomposite catalyst exhibits remarkable reusability, maintaining high catalytic activity over multiple cycles without significant loss of performance, making it economically viable for large-scale applications.</p><p><b>High Catalyst Stability:</b> The catalyst shows outstanding stability during the reaction, ensuring consistent performance and longevity, which is crucial for its practical applications in continuous or industrial processes.</p><p><b>Versatility in Substrate Compatibility:</b> The catalytic system is compatible with a wide range of aryl and heteroaryl iodides, as well as heterocyclic amines, allowing the synthesis of a diverse array of heterocyclic amides with potential pharmaceutical and industrial applications.</p><p><b>Cost-Effective and Green Alternative:</b> By utilizing a green solvent and a reusable, stable catalyst, the method offers a cost-effective and sustainable alternative to conventional carbonylation processes, enhancing its appeal for environmentally conscious manufacturing practices.</p><p></p> <p><b>High Efficiency and Selectivity:</b> The method provides an efficient route for synthesizing heterocyclic amide derivatives with high yields and selectivity, offering a robust solution for complex chemical transformations.</p> <p><b>Sustainable Green Chemistry:</b> The use of the ChCl-Urea green solvent system minimizes environmental impact, aligning with green chemistry principles by reducing hazardous solvents and waste.</p> <p><b>Mild Reaction Conditions:</b> The process operates under mild conditions, which reduces energy consumption, lowers operational costs, and enhances safety in both laboratory and industrial settings.</p> <p><b>Exceptional Catalyst Reusability:</b> The Fe₃O₄@MCM-41-Creatine-Pd(0) nanocomposite catalyst exhibits remarkable reusability, maintaining high catalytic activity over multiple cycles without significant loss of performance, making it economically viable for large-scale applications.</p> <p><b>High Catalyst Stability:</b> The catalyst shows outstanding stability during the reaction, ensuring consistent performance and longevity, which is crucial for its practical applications in continuous or industrial processes.</p> <p><b>Versatility in Substrate Compatibility:</b> The catalytic system is compatible with a wide range of aryl and heteroaryl iodides, as well as heterocyclic amines, allowing the synthesis of a diverse array of heterocyclic amides with potential pharmaceutical and industrial applications.</p> <p><b>Cost-Effective and Green Alternative:</b> By utilizing a green solvent and a reusable, stable catalyst, the method offers a cost-effective and sustainable alternative to conventional carbonylation processes, enhancing its appeal for environmentally conscious manufacturing practices.</p>