Synthesis and characterization of Pd(II)–vitamin B6 complex supported on magnetic nanoparticle as an efficient and recyclable catalyst system for C–N cross coupling of amides in deep eutectic solvents

Vitamin B₆–Pd(II) immobilized onto magnetic nanoparticles have been successfully prepared and applied for C–Xcross-coupling reactions with aryl halides in green deep eutectic solvents. The results prove that the Fe₃O₄@vitamin B₆–Pd(II) magnetic nanoparticles show high catalyst activity and good stability. It was also revealed that this complex can be recycled up to five times without any significant loss in catalytic activity.