An Efficient and Green Protocol for the Synthesis of Schiff’s Base Ligand of 2-Hydroxy 1- Napthaldehyde With Glycine in Water and its Complexation with Iron Metal under Sonication

The synthesis of Schiffs base ligand of 2-hydroxy 1napthaldehyde with glycine in abundantly available water as a solvent is claimed in this paper. For the synthesis of this classical Schiffs base, potassium hydroxide (KOH) is used as a base under ultrasonic conditions. Various reaction parameters were explored to find out optimal reaction conditions viz. effect of solvent, temperature, time, and ultrasound wave. The synthesized ligand was identified by comparing with standard product on TLC and further confirmed by melting point, IR and mass analysis. The ligand is then used for complexation with transition metal (iron) using ultrasound as a facilitator.