5-Methyl-4-(5-methyl-3-oxo-2-phenyl-2,3-di­hydro-1H-pyrazol-4-yl)-2-phenyl-1H-pyrazol-3(2H)-one

ABSTRACT: The crystal structure of bis­pyrazolone, recrystallized from DMSO, indicates that the enamine tautomer is favored. The title compound, C20H18N4O2, known as bis­pyrazolone, was crystallized from dimethyl sulfoxide. The structure has ortho­rhom­bic (Pbca) symmetry at 150 K, and displays both intra- and inter­molecular hydrogen bonding through C—H⋯O and N—H⋯O contacts, respectively. None of the phenyl and pyrazolone rings in the mol­ecule are coplanar. The dihedral angle between the pyrazolone rings is 66.18 (5)°.

SUBMITTER: Powell G 

PROVIDER: S-EPMC9462187 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature