Abstract
We have synthesized rod-shaped tricyclic monoazo and bisazo dyes based on amino derivatives of arylpyrimidines and N,N-dialkylanilines orp-nitroso-N,N-dialkylanilines. We have shown that the process of azo coupling of the diazonium salt obtained from 2,5-bis(p-arninophenyl)pyritnidine is accompanied by dediazoniation, with substitution of the diazonium group by hydrogen or an aryl group. The monoazo dyes obtained display mesomorphic properties which are absent in the bisazo dyes.
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Novosibirsk Institute of Organic Chemistry, Siberian Division of the Russian Academy of Sciences, Novosibirsk 630090. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 693–702, May, 1996. Original article submitted January 25, 1996.
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Sedova, V.F., Borovik, V.P., Mikhaleva, M.A. et al. Polycyclic rod-shaped azo dyes based on aminophenylpyrimidines. Chem Heterocycl Compd 32, 596–604 (1996). https://doi.org/10.1007/BF01164793
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DOI: https://doi.org/10.1007/BF01164793