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The nitro group of 4-(p-nitrobenzyl)pyridine was converted to amino group and 4-(p-aminobenzyl)pyridine was prepared by catalytic hydrogenation using hydrazine hydrate/Pd-C systemReaction of 4-(p-aminobenzyl)pyridine with 1,3,5-benzenetricarboxylic acid under appropriate conditions yielded a new diacid containing amide group and pyridine unit. The prepared substances were characterized using FT-IR, H-NMR, and mass spectroscopy and also elemental analysis. Polycondensation reactions of the diacid with different commercially available diols in the presence of benzenesulfonyl chloride afforded new types of poly(amide-ester)s. All the polymers were characterized and their physical and thermal properties were studied. The polymers showed high thermal stability and also enhanced solubility in polar aprotic solvents.

Soluble, thermally stable poly(amide-ester)s containing pyridine pendent group