In this project, first, palladium nanoparticles stabilized on silica support functionalized by nicotine prepared and its performance in the Suzuki and Sonogashira reactions was observed. Catalyst characterized by using ICP، XRD، TEM، SEM-EDX FT-IR analyses. The presence of palladium by ICP, SEM-EDX and XRD analysis has confirmed. Whit analytical techniques TEM catalyst size in nanoscale was confirmed. IN the next section, silica core- shell magnetic nanoparticles were prepared and functionalized by NHC ligand and palladium nanoparticles immobilized on the surface of these particles. The Catalyst was characterized by using ICP, XRD, SEM-EDX, FT-IR, VSM, SEM AND TEM analyses. Catalyst magnetic properties by VSM techniques Confirmed. Presence of palladium was confirmed by ICP SEM-EDX techniques. XRD technique was used to prove the magnetite phase and Pd (??). TEM and SEM techniques were used to demonstrate nanoscale catalyst. Performance Fe 3 O 4 @ SiO 2 -NHC-Pd catalysts in the Heck reaction and Suzuki was studied. Products obtained by techniques FT-IR, 13 CNMR and 1 HNMR were identified. Prepared catalysts were extracted simply at the end of each reaction by using centrifuge apparatus and the external magnetic field and reused.