Silica supported copper nano particles design from metal waste apply formation of various condensation reaction

In recent years organic chemist focused on green chemistry for organic synthesis transformations because the silica supported catalyst is more stable, efficient and easy to recover and reusable after reaction. The silica supported copper catalyst is design from E-Waste, It used for formation of benzimidazoles from diamines and aldehydes.it is very deep work done by various catalyst, we noted in our research in unique method develop for synthesis of benzimidazoles made by condensation diamine and aldehydes via silica supported copper nano particles under EtOH as reaction media . The reactions done at 60° C temperature for 80 minute by 1:1.2 ratio mixture of diamine and aldehydes in the presence of nano catalyst to give the desired products with high purity.