Conclusions
It has been found that, in contrast to the condensation of phthalonitrile with diamines with pKa > 2.7, the principal products from which are macroheterocycles, reaction of phthalonitrile with diamines with pKa ≤ 2.7 gives linear condensation products of the reactants.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2145–2148, September, 1988.
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Siling, S.A., Vinogradova, S.V. & Klyuev, N.A. Condensation of phthalonitrile with weakly basic diamines. Russ Chem Bull 37, 1926–1929 (1988). https://doi.org/10.1007/BF00962516
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DOI: https://doi.org/10.1007/BF00962516