Abstract
A method has been developed for obtaining 3-alkyl(phenyl)-4(5)-chloro-1-(2,4-dinitrophenyl)pyrazoles from appropriate dinitrophenylhydrazones of 1-chloro-, 1,2-, and 2,2-dichlorovinyl ketones by heating the latter in polyphosphoric acid. The structure of the pyrazoles was studied by IR and 1H NMR spectroscopy.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 1012–1019, July, 2005.
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Bozhenkov, G.V., Levkovskaya, G.G., Mirskova, A.N. et al. 5(4)-Chloro-1-(2,4-dinitrophenyl)pyrazoles from 2,4-Dinitrophenylhydrazones of Chlorovinyl Ketones and β,β-Dichloroacrolein. Chem Heterocycl Compd 41, 854–860 (2005). https://doi.org/10.1007/s10593-005-0238-9
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DOI: https://doi.org/10.1007/s10593-005-0238-9