چكيده به لاتين
In recent years, the synthesis of cyclic amines has received much attention in pharmaceuticals, explosives, rocket propellants, and agriculture. Due to the great importance of cyclic amines, researchers worldwide have reported various catalysts for their synthesis. But until now, the synthesized catalysts for the preparation of cyclic amine derivatives have limitations and problems, which makes the efforts to make new nanocatalysts environmentally friendly, with an easy, cheap, and high-efficiency synthetic method, expand day by day. In this work, a new nanocatalyst consisting of a heterogeneous catalyst was prepared using nickel metal nanoparticles stabilized with papain (MCN@Pr@Papain@Ni). This catalyst was used in reduction reactions to synthesize cyclic amine derivatives with high yield and short reaction time, and most importantly, in the presence of 50 microliters of water-green solvent. Identification of this catalyst using Fourier transform infrared spectroscopy (FT-IR), X-ray energy diffraction spectroscopy (EDS), field emission scanning electron microscopy (FE-SEM), X-ray diffraction pattern (XRD) and thermometric analysis TGA)) was performed and confirmed. This catalyst has high thermal stability, high specific surface area, and good reusability up to four times without significant loss of efficiency. In addition, easy isolation, excellent activity, and mild reaction conditions make this catalyst an excellent catalytic system. In addition, cyclic amine derivatives were synthesized under mild reaction conditions using benzaldehyde derivatives, sodium borohydride, and the optimal amount of catalyst. The substrate used in this catalyst is mesoporous carbon nitride, which is desirable in heterogeneous catalysts due to its low-cost synthesis and excellent structural features such as high surface area.
