Journal of Siberian Federal University. Chemistry / Synthesis and Sulphonylation of 4-Amino-3-Methoxymethyl-5- (4-Chlorophenyl)-1H-Pyrazole

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Issue
Journal of Siberian Federal University. Chemistry. 2018 11 (3)
Authors
Persidskaya, Diana I.; Povarov, Ilya G.; Efimov, Viktor V.; Lyubyashkin, Alexey V.; Suboch, Georgy A.; Tovbis, Mikhail S.
Contact information
Persidskaya, Diana I.: Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; Povarov, Ilya G.: Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; ; Efimov, Viktor V.: Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; Lyubyashkin, Alexey V.: Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; Suboch, Georgy A.: Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia; Tovbis, Mikhail S.: Siberian State University of Science and Technology 31 Krasnoyarsky Rabochy, Krasnoyarsk, 660037, Russia
Keywords
Claisen condensation; hydrazine hydrate; nitrosopyrazole; nitrosation; aminopyrazole; sulfonylamide; sulfonylation; IR, UV, NMR spectroscopy
Abstract

The paper presents experimental data on the preparation of 1-(4-chlorophenyl)-4-methoxy-1,2,3- butanetrione-2-oxime. Its cyclization with the formation of a new substituted nitrosopyrazole was carried out. In the first, 4-amino-3-methoxymethyl-5-(4-chlorophenyl)-1H-pyrazole was obtained and its sulfonylation with p-toluenesulfonyl chloride was carried out. The structure of all compounds is proved by means of IR, UV, NMR spectroscopy. It was found that 4-amino-3-methoxymethyl-5-(4- chlorophenyl)-1H-pyrazole in chloroform solution exists as a double ion

Pages
369-376
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/107067