3,4-Dimethyl-1-phenyl-pyrano[2,3-c]pyrazol-6(1H)-one

Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):o1021. doi: 10.1107/S1600536811011317. Epub 2011 Mar 31.

Abstract

In the title compound, C(14)H(12)N(2)O(2), the dihedral angle between the phenyl ring and the 3,4-dimethyl-pyrano[2,3-c]pyrazol-6(1H)-one system is 7.28 (6)°. An intra-molecular C-H⋯O inter-action generates an S(6) ring. In the crystal, the mol-ecules are linked by C-H⋯O hydrogen bonds, forming C(8) chains. C-H⋯π and π-π inter-actions [centroid-centroid separation = 3.6374 (12) Å] further consolidate the packing.