Abstract
Reaction of 2,3-dichloro-5,6-dicyanopyrazine with α-azahetarylacetonitriles gives α-(3-chloro-5,6-dicyanopyrazin-2-yl)-α-(2-azahetaryl)acetonitriles. Subsequent heating in pyridine causes an intramolecular cyclization to yield condensed pyrrolo[b]pyrazines.
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Taras Shevchenko University, Kiev 252033, Ukraine; e-mail: dov@fosfor.kiev.ua. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1234–1238, September, 1999.
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Volovenko, Y.M., Dubinina, G.G. Synthesis of condensed pyrrolo[b]pyrazines. Chem Heterocycl Compd 35, 1089–1093 (1999). https://doi.org/10.1007/BF02251802
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DOI: https://doi.org/10.1007/BF02251802