The article presents experimental data regarding some organic compounds as chemical intermediates with phthalic acid structure, precursors for new phthalocyanine compounds as : 4-nitrophthalimide, 4-aminophthalimide, 4-nitrophthalonitrile and 4-aminophthalonitrile, synthesized by chemical transformation of phthalimide by a series of successive reactions as : nitration and reduction, or nitration, amidation, dehydration and reduction. Reaction products were purified and characterized by means of elemental analysis, UV-Vis, fluorescence, IR, 1H-NMR, 13C-NMR spectroscopy, and thermal analysis. Structure-property relationship in the organic compounds is discussed with respect to the nature of the substituents.
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