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Updated: May 18, 2026

Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines
Published on: June 23, 2019
4-(4-Fluoro-phen-yl)-3-(pyridin-4-yl)-1-(2,4,6-trichloro-phen-yl)-1H-pyrazol-5-amine
Abstract:
In the title compound, C(20)H(12)Cl(3)FN(4), the pyrazole ring forms dihedral angles of 47.51 (9), 47.37 (9) and 74.37 (9)° with the directly attached 4-fluoro-phenyl, pyridine and 2,4,6-trichloro-phenyl rings, respectively. Only one of the two amino H atoms is involved in hydrogen bonding. The crystal packing is characterized by N-H⋯N hydrogen bonds, which result in infinite chains parallel to the c axis.
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