Here a novel Pd supported polymeric magnetic nanoparticles with urea-pyridine bridge (denoted as Fe₃O₄@/Urea-Pyridine/Pd) was synthesized and characterized. The Fe₃O₄@/Urea-Pyridine/Pd nanocatalyst was synthesized via a four steps process by using Fe₃O₄ nanoparticles, 3‐(triethoxysilyl) propylisocyanate (TESPIC), 2,6 bis(propyl-triethoxysilylureylene) pyridine (BPS) and palladium chloride. The synthesized polymeric Fe₃O₄@/Urea-Pyridine/Pd nanocatalyst was analyzed through different analytical techniques, including FT-IR, NMR, XRD, VSM, TGA, DTA, ICP, FESEM, EDX, and BET. The described palladium supported polymeric magnetic nanoparticles with urea-pyridine bridge (Pd-MNPs) was used for the C–C and C–N coupling of phenylboronic acid with various amines and aryl halides in DMF as well as Sonogashira and Suzuki reactions in aqueous solution. Also, the Fe₃O₄@/Urea-Pyridine/Pd nanocatalyst exhibited high structural stability and excellent recyclability.

本文合成并表征了新型的具有尿素-吡啶桥（表示为Fe ₃ O ₄ @ /脲-吡啶/ Pd）的钯负载的聚合物磁性纳米粒子。通过使用Fe ₃ O ₄纳米粒子，3-（三乙氧基甲硅烷基）丙基异氰酸酯（TESPIC），2,6双（丙基-三乙氧基甲硅烷基丙烯基）吡啶（BPS）通过四步法合成了Fe ₃ O ₄ @ /脲-吡啶/ Pd纳米催化剂）和氯化钯。合成高分子Fe ₃ O ₄通过不同的分析技术，包括FT-IR，NMR，XRD，VSM，TGA，DTA，ICP，FESEM，EDX和BET，对尿素吡啶/钯纳米催化剂进行了分析。所述的具有脲-吡啶桥（Pd-MNPs）的钯负载聚合物磁性纳米粒子用于在DMF中将苯基硼酸与各种胺和卤代芳烃进行C-C和C-N偶联，以及水溶液中的Sonogashira和Suzuki反应。另外，Fe ₃ O ₄ _ /脲-吡啶/ Pd纳米催化剂显示出高的结构稳定性和优异的可回收性。