Gold nanoparticles decorated magnetic dithiocarbamate nanocomposite (Au@CS2-AP@Fe3O4) led to a suitable catalyst for the propargylamines synthesis via A(3)-coupling reaction in water. The prepared catalyst was characterized by Fourier-transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, atomic absorption spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy measurements. [GRAPHICS] .