(Z)-4-[(Ethylamino)(furan-2-yl)methylidene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one

Abstract

In the crystal of the title compound, C17H17N3O2, the molecules exist in the keto–enamine form. The pyrazole ring is oriented at 10.59 (4) and 57.98 (5)° to the phenyl and furyl rings, respectively, and the dihedral angle between phenyl and furyl rings is 73.30 (11)°. An intramolecular N—H...O hydrogen bond occurs between imino and carbonyl groups. In the crystal, weak C—H...O hydrogen bonds link the molecules into supramolecular chains along the b axis.