Darya S. Volkova, Anna S. Kositsyna, Alexey A. Kukushkin, E. V. Root
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Synthesis and Structural Features of 3(5)-alkyl(aryl)-5(3)-pyridyl-4-nitroso-1Н-pyrazoles
А para-chlorophenyl substituent was firstly obtained into the structure of pyridyl-substituted 4-nitrosopyrazole by cyclocondensation of hydrazine hydrate with the corresponding isonitroso-β-dicarbonyl compounds. The structure of previously unknown 3(5)-(4-chlorophenyl)-5(3)-pyridine-(3(4))-yl-4-nitroso-1H-pyrazoles and previously obtained 3(5)-alkyl(aryl)-5(3)-pyridine-(3(4))-yl-4-nitroso-1H-pyrazoles is proved and studied in detail by modern methods of analysis: mass spectrometry, 1H- and 13C NMR-spectroscopy
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