Zhang, Zhao published the artcile(Z)-4-[(3-Aminonaphthalen-2-ylamino)(phenyl)methylidene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one, Application In Synthesis of 4551-69-3, the publication is Acta Crystallographica, Section E: Structure Reports Online (2012), 68(9), o2777, database is CAplus and MEDLINE.
The mol. of the title compound, C27H22N4O, assumes a non-planar conformation in which the pyrazolone ring forms dihedral angles of 12.73(11), 65.17(6), and 49.82(6)° with the two benzene rings and the naphthalene ring system. In the crystal, pairs of mols. are linked by intermol. N-H···N hydrogen bonds, forming dimers. The secondary amino group is involved in an intramol. N-H···O hydrogen bond.
Acta Crystallographica, Section E: Structure Reports Online published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C15H12O6, Application In Synthesis of 4551-69-3.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics