The preparation of several bis(1,4‐diazepinium) salts from the reaction of three 1,2‐diamines with a bis(vinamidinium) salt is described. Bis(γ‐substituted pentamethine cyanine(dyes are also prepared from the reaction of vinamidinium salt with 1,2‐dimethylquinolinium perchlorate and 1,2,3,3‐tetramethyl‐3H‐indolium perchlorate. Data from elemental analyzes, IR, 1H‐NMR, 13C‐NMR, and mass spectra (MS) confirm the molecular structure of the obtained products.

Some new substituted 1,8‐ naphthyridines 2a, 2b, 2c, 2d, 2e, 2f, 2g have been synthesized by treating various 2‐substituted vinamidinium salts 1a, 1b, 1c, 1d, 1e, 1f, 1g with 2,6‐diaminopyridine. The structures of the synthesized compounds have been established on the basis of elemental analysis and spectroscopic data (1H‐NMR, 13C‐NMR, IR, UV/VIS, and mass).

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