title: 1,5-Dimethyl-4-(1-methyl-3-oxo-3-phenylprop-1-enyl-amino)-2-phenyl-1H-pyrazol-3(2H)-one.
abstract: In the title compound, C(21)H(21)N(3)O(2), an intra-molecular N-H⋯O inter-action generates an S(6) ring, which stablizes the enamine-keto tautomer. The S(6) ring makes dihedral angles of 33.07 (7), 56.50 (8) and 38.59 (8)°, respectively, with the benzoyl-acetone benzene ring and the anti-pyrine pyrazole and benzene rings.
authors.affiliation: Department of Basic Science, Tianjin Agriculturial College, Tianjin Jinjing Road No 22, Tianjin, 300384, People's Republic of China.
authors.forename: Hualing
authors.initials: H
authors.lastname: Zhu
authors.forename: Zhan
authors.initials: Z
authors.lastname: Wang
authors.forename: Junjie
authors.initials: J
authors.lastname: Ren
authors.forename: Miao
authors.initials: M
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Xu