Abstract
The acylation of 4′-(3,4-dimethoxyphenyl)benzo-15-crown-5 by carboxylic acid anhydrides in the presence of equimolar amounts of perchloric acid gave 1-alkyl-3-[3′,4′-(3″,6″,9″,12″,15″-pentaoxa-1″, 2″-cyclopentadeceno)phenyl]-6,7-dimethoxybenzo[c]pyrilium salts, which are converted by the action of ammonia to the corresponding isoquinolines.
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A. T. Balaban, G. N. Dorofeenko, A. Dinculescu, J. Ficher, V. V. Mezheritskii, and A. V. Koblik, in: Advances in Heterocyclic Chemistry, Supplement 2 (1982).
V. I. Dulenko, S. L. Bogza, and Yu. A. Nikolyukin, Khim. Geterotsikl. Soedin., No. 9, 1283 (1984).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 171–172, February, 1989.
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Bogza, S.L., Nikolyukin, Y.A. & Dulenko, V.I. Benzo[c]pyrilium salts with a cyglopolyether substituent. Chem Heterocycl Compd 25, 134–135 (1989). https://doi.org/10.1007/BF00479904
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DOI: https://doi.org/10.1007/BF00479904