Magnetically separable and recyclable FeO@SiO/isoniazide/Pd nanocatalyst for highly efficient synthesis of biaryls by Suzuki coupling reactions.

This report contains the procedure implemented in the preparation of FeO@SiO/isoniazide/Pd as a novel magnetic nanocatalyst, in which isoniazide groups are utilized (as linkers) to secure palladium nanoparticles (Pd NPs) to the FeO exterior without agglomeration. The resultant catalyst was characterized through performing transmission electron microscopy (TEM), scanning electron microscopy (SEM), wavelength-dispersive X-ray spectroscopy (WDX), X-ray powder diffraction (XRD), Fourier transform infrared (FTIR), inductively coupled plasma (ICP), Energy-dispersive X-ray spectroscopy (EDS), vibrating sample magnetometer (VSM) and X-ray photoelectron spectroscopy (XPS). The catalytic behavior of FeO@SiO/isoniazide/Pd was investigated to synthesis of biaryl compounds by Suzuki coupling reactions. Interestingly, the novel catalyst was able to be recovered and recycled six times without any noticeable loss in activity.