A new Schiff-base complex of palladium nanoparticles on modified Fe3O4 with 3,5-diaminobenzoic acid (DAA) as a robust, reusable, and selective catalyst in the CN and CC coupling reactions

• Published in: Journal of molecular structure 2025-02, Vol.1322, Article 140241
• Main Authors: Singh, Durgesh, Singh, Kamini, Jain, Vicky, Ganesan, Subbulakshmi, Hamid, Junainah Abd, Chahar, Mamata, Saini, Suman, Abosaoda, Munther Kadhim, Atif, M., El-Meligy, Mohammed A.
• Format: Article
• Language: English
• Subjects: Complex; Cross‑coupling; Fe3O4; Nanoparticles; Schiff base
• ISSN: 0022-2860
• DOI: 10.1016/j.molstruc.2024.140241

•This is the first report of this catalyst.•Catalysts are used for CN and CC coupling reactions with high activity.•Nanocatalyst can be recovered and reused without decreasing catalytic activity. A Pd Schiff base complex was immobilized onto the surface of magnetic Fe3O4 as a novel, green, and recyclable heterogeneous nanocatalyst and fully characterized by TEM, XRD, FT-IR, BET, SEM, ICP-OES, EDS, TGA, and VSM techniques. The Fe3O4@SiO2@DAA@Schiff base-Pd(0) catalyst exhibits outstanding performance in catalyzing Buchwald-Hartwig and Stille coupling reactions, resulting in high yields of the corresponding products. This catalyst offers numerous benefits, such as a straightforward testing procedure, environmentally friendly reaction conditions, absence of hazardous solvents, quick reaction time, low catalyst usage, and the ability to be reused. Furthermore, the nanocatalyst could be effortlessly separated from the reaction mixture using a bar magnet, enabling its repeated recovery and reuse without compromising its stability or activity. [Display omitted]