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Abstract
Synthesis and characterization of six new Schiff's bases, potential hexadentate ligands, containing amide groups and pyridine rings with shallow structures are described. The two step reactions involving ring opening of isatoic anhydride with diamines followed by condensation with pyridine aldehydes proceed smoothly to give Schiff's bases containing pyridine rings in high purity and better yields.
Acknowledgment
The authors thank UGC, New Delhi for the financial assistance under major research project 12‐57/2001, and Prof. Dr. H. Schumann of TU Berlin, Germany for the analytical and spectral data.