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The experimental data on the sulfonylation of 4-amino-1H pyrazoles with p-toluenesulfonyl chloride are given in the paper. New compounds were obtained: 3,5-dimethyl-4-tosylamino-1H-pyrazole, 3-methoxymethyl-5-phenyl-4-tosylamino-1H-pyrazole, 3-methoxymethyl-5-naphthyl-4-tosylamino1H-pyrazole, 3-methyl-5-naphthyl-4-tosylamino-1H-pyrazole. The structure of sulfonylated aminopyrazoles was proved by IR, UV, 1H NMR spectroscopy and mass spectrometry.

Synthesis of Sulfonylated 4-Amino-1H-Pyrazoles with Aryl and Methoxymethyl Substituents