A review on various green methods for synthesis of Schiff base ligands and their metal complexes

The purpose of green synthesis is to limit the amount of hazardous compounds used in synthesis and their discharge into the environment. Compared to traditional approaches, green techniques must improve selectivity, minimise reaction time, and simplify product separation. Schiff base ligands and their metal complexes are well-known for their pharmacological effects and diverse uses in a wide range of industries. They are engaged in a variety of critical biological and pharmacological functions. The purpose of this research is to focus on environment friendly synthetic procedures used in the synthesis of Schiff bases in order to discover the most efficient ways which provide better yield in lesser time along with being environment friendly. The study considers seven green synthesis strategies for synthesising Schiff base ligands and their metal complexes, including the use of natural acids as a catalyst, water as a green solvent, microwave irradiation, grinding, ball milling, industrial waste, and egg white.