Abstract
Previously unknown symmetrical and unsymmetrical β, β'-dialkoxytetracarbocyanine and β, β'-dialkoxypentacarbocyanine dyes have been synthesized by the condensation of β-alkoxy-substituted hexamethine and octamethine hemicyanines with quaternary salts of β-alkoxypropenyl derivatives of heterocyclic bases. Tetracarbocyanines with a symmetrical structure have also been obtained by the direct interaction of quaternary salts of β-alkoxypropenyl derivatives of heterocyclic bases with malonaldehyde dianil.
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N. N. Sveshnikov, I. I. Levkoev, B. S. Portnaya, and E. B. Lifshits, DAN, 4, 733, 1952.
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Kheifets, S.A., Sveshnikov, N.N. Synthesis of tetra- and pentacarbocyanine dyes with alkoxy groups in the β,β′ positions of the polymethine chain. Chem Heterocycl Compd 3, 813–814 (1967). https://doi.org/10.1007/BF00474876
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DOI: https://doi.org/10.1007/BF00474876