Abstract
4-(3-Oxopropyl)-5-pyrazolone derivatives were obtained under mild conditions of alkaline catalysis by condensation of 1-phenyl-3-methyl-5-pyrazolone and substituted chalcones. During ionic hydrogenation of the products they undergo heterocyclization with the formation of 5,6-dihydropyrano[3,2-d]pyrazoles.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 245–248, February, 1981.
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Mityurina, K.V., Kharchenko, V.G. & Cherkesova, L.V. Preparation and ionic hydrogenation of substituted 4-(3-oxopropyl)-5-pyrazolones. Chem Heterocycl Compd 17, 180–183 (1981). https://doi.org/10.1007/BF00507253
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DOI: https://doi.org/10.1007/BF00507253