Abstract
Previously unknown polymethine dyes of symmetrical and unsymmetrical structure based on cyclohepta[c]pyr-role were synthesized and their spectral properties investigated.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 193–198, February, 1994. Original article submitted November 30, 1993.
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Briks, Y.L., Romanov, N.N. Polymethine dyes based on 2-azoniaazulene. Chem Heterocycl Compd 30, 173–177 (1994). https://doi.org/10.1007/BF01165007
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DOI: https://doi.org/10.1007/BF01165007