چكيده به لاتين
Today, because of the importance of the environmental issue on human health and life, many research are under investigation in order to develop and provide effective, safe, environmentally friendly approaches and the use of efficient catalysts for the synthesis of organic compounds in accordance with the principles of green chemistry. One of these effective research approaches is the production of nanoporous materials and their functionalization to increase catalytic activity in organic reactions. In this project, periodic mesoporous organosilicas (PMOs), which are a new generation of organic-inorganic hybrid materials and have been widely used in recent years, were particularly investigated. Isocyanurate-based periodic mesoporous organosilicas (PMO-ICSs) were prepared purely or as a support for immobilizing palladium, propylsulfonic acid-anchored isocyanurate-based periodic mesoporous organosilica (PMO-ICS-PrSO3H) and magnetic isocyanurate-based periodic mesoporous organosilica (Fe3O4@PMO-ICS) materials. The structure of this class of nanoporous materials were characterized and confirmed by different identification techniques. Then, their catalytic activity and efficiency as effective and highly efficient heterogeneous and nanoporous catalysts were evaluated in multicomponent reactions such as the synthesis of polyhydroquinoline, imidazole, 2-amino-4H-chromene, bis-indolyl methane derivatives and Suzuki cross-coupling reaction. The results of this study showed that the isocyanurate-based periodic mesoporous organosilicas (PMOs) were highly efficient in the organic aforementioned reactions and showed good catalytic activity. The desired products were obtained in good to excellent yields and short reaction times under optimal conditions for each reaction. Furthermore, the catalysts can be recycled and reused for several times without significant loss of its performance.
