Abstract
3-Aryloxychromones are recyclized under the action of hydrazine into derivatives of 4-aryloxy-3-(2,4-dihydroxyphenyl)pyrazole.
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Arkhipov, V.V., Garazd, M.M., Smirnov, M.N. et al. Chemistry of Modified Flavonoids. 24. Synthesis of 4- Aryloxy-3-(2-hydroxy-4-hydroxy/alkoxyphenyl)pyrazoles. Chemistry of Heterocyclic Compounds 40, 183–187 (2004). https://doi.org/10.1023/B:COHC.0000027889.10448.c1
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DOI: https://doi.org/10.1023/B:COHC.0000027889.10448.c1