A new heterogeneous catalytic system containing triazine-based copper (II) tridentate NNN-pincer complex, covalently anchored to the amine-functionalized silica-coated Fe3O4 magnetic nanoparticles, Fe3O4@SiO2-NH-CCl-AT-Cu(II), was synthesized. Its structure was studied through the standard methods of FT-IR, NMR, EDX, TGA, FE-SEM, MAP images, XRD, ICP, and N2 adsorption-desorption isotherm analysis and utilized for the production of propargylamines by one-pot A3 coupling of phenylacetylene, aldehydes, and secondary amines, attaining TOF values of up to 40000 h‐1. The impact of various solvents, reaction time, temperature, catalyst amount, and recyclability of the catalyst were studied to optimize reaction conditions. The catalyst was re-examined five times, and no noteworthy reduction in activity was observed.
