Abstract
Amines which are organic molecules can be employed in several significant syntheses such as the synthesis of biologically active molecules, polymers, drugs, dyes and pharmaceutical products. The critical issue in the synthesis of amines is to choose the most efficient heteregenous catalyst in order to obtain the best catalytic activity, reusability and durability. For this purpose, up to know, many studies have been performed on the reduction of nitro compounds to synthesize amines in the presence of various heteregenous catalysts. Addressed herein, recent developments have been gathered on the production of amines by the help of heteregenous catalysts such as platinum-, gold-, palladium-, silver-, nickel-, iron-, copper-, ruthenium-, iridium-, rhodium-, ionic liquid- and carbon-based monometallic, bimetallic and multimetallic heterogenous catalysts. Those catalysts have showed superior characteristics in terms of the amount, recoverability, reusability and the structural integrity of catalyst during the reaction. Thus, the main goal of this study is to enlighten the scientists and to discuss (review) the critical investigations on the reduction of nitro groups by heterogenous catalysts in last years.
Keywords: Heterogenous catalyst, nitro compound, amine compound, reduction, hydrogen source.
Graphical Abstract