Abstract
It is shown that treatment of 3-hetarylchromones with alkalis and hydrazine hydrate leads to opening of the pyrone ring and subsequent conversion of the intermediate to α-hetaryl-2-hydroxyacetophenones and 2-hydroxyphenylpyrazole derivatives.
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See [1] for communication IV.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1474–1476, November, 1976.
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Khilya, V.T., Grishko, L.G. & Babichev, F.S. Chemistry of heteroanalogs of isoflavones. Chem Heterocycl Compd 12, 1214–1216 (1976). https://doi.org/10.1007/BF00470216
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DOI: https://doi.org/10.1007/BF00470216