An efficient and convenient nanocrystalline MgO catalyzed one pot preparation of double Schiff bases
via solvent free method is described. This protocol was designed through treatment of salicylaldehyde (or furfural)
with various aromatic aldehydes and NH4OOCPh to afford double Schiff bases in high purity, excellent yields and
short reaction times. These compounds are used as significant ligands that can be coordinated with different transition
metal ions in order to be used in various applications like catalysis in organic synthesis. The advantages of this
method are availability of starting materials, simplicity of the reaction, easy work up procedure, eco-friendly catalyst,
green protocol and purity of products. The products were characterized by physical data and spectroscopic
techniques such as; FT-IR, 1H NMR, 13C NMR, C.H.N. and Mass spectra.