Research Article: 4-[(3-Hy­droxy­anil­ino)­(phenyl)­methyl­idene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one

Date Published: June 01, 2012

Publisher: International Union of Crystallography

Author(s): Keraghel Saida, Benghanem Fatiha, Dehbi Ouarda, Ourari Ali, Ouari Kamel, Lydia Brelot.

http://doi.org/10.1107/S1600536812023082

Abstract

In the title compound, C23H19N3O2, the dihedral angles formed by the pyrazolone ring with the three benzene rings are 30.91 (6), 60.96 (4) and 57.01 (4)°. The ligand is in the enamine–keto form and its structure is stabilized by an intra­molecular N—H⋯O hydrogen bond. In the crystal, O—H⋯N hydrogen bonds link mol­ecules into chains parallel to [01-1].

Partial Text

For the synthesis and applications of pyrazolo­nes and derivative compounds, see: Jensen (1959 ▶); Casas et al. (2007 ▶); Metwally et al. (1985 ▶); Morris et al. (1986 ▶); Raja et al. (2012 ▶); Delgado et al. (2006 ▶); Liskovskaya et al. (2006 ▶); Peng et al. (2004 ▶); Wang et al. (2002 ▶); Ramasamy et al. (2010 ▶); Thakar et al. (2010 ▶); Xu et al. (2006 ▶); Zhu et al. (2005 ▶); Wang et al. (2003 ▶).

Source:

http://doi.org/10.1107/S1600536812023082