A new magnetic nanoparticles-supported palladium(II) nanomagnetic catalyst (Pd-AcAc-Am-Fe₃O₄@SiO₂) was synthesized and characterized using attenuated total reflectance infrared spectroscopy (ATR-IR), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), energy-dispersive X-ray spectroscopy (EDS), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The nanomagnetic catalyst was used as convenient and efficient catalyst for the Suzuki–Miyaura cross-coupling of various aryl bromides/chlorides/iodides with phenylboronic acid. The effects of varying solvents, base, temperature, reaction time and catalyst amount on the performance of the Suzuki– Miyaura cross-coupling reaction were investigated. The notable advantages of this heterogeneous nanomagnetic catalyst are excellent yields, mild reaction conditions, short reaction times and easy magnetic work-up and recyclability. Moreover, the new nanomagnetic catalyst could be easily recovered with an external magnet and could be reused at least six times without significant loss of its catalytic activity.

新型磁性纳米粒子负载钯（II）纳米磁性催化剂（Pd-AcAc-Am-Fe ₃ O ₄ @SiO ₂）的合成和表征使用衰减全反射红外光谱（ATR-IR），电感耦合等离子体原子发射光谱（ICP-AES），能量色散X射线光谱（EDS），场发射扫描电子显微镜（FE- SEM），透射电子显微镜（TEM）和振动样品磁力计（VSM）。纳米磁性催化剂被用作各种芳基溴化物/氯化物/碘化物与苯基硼酸的Suzuki-Miyaura交叉偶联的便捷有效的催化剂。研究了不同溶剂，碱，温度，反应时间和催化剂用量对铃木-宫浦交叉偶联反应性能的影响。这种非均相纳米磁性催化剂的显着优势是产率高，反应条件温和，反应时间短，易于磁处理和回收。而且，新的纳米磁性催化剂可以容易地用外部磁体回收，并且可以重复使用至少六次而不会显着降低其催化活性。