Crystal structure of 3-{1-[(1-allyl-1H-indazol-6-yl)amino]-ethyl-idene}-6-methyl-2H-pyran-2,4(3H)-dione

Acta Crystallogr Sect E Struct Rep Online. 2014 Nov 15;70(Pt 12):o1256. doi: 10.1107/S1600536814024520. eCollection 2014 Dec 1.

Abstract

In the title compound, C18H17N3O3, the dihedral angle between the planes of the indazole ring system [maximum deviation = 0.012 (1) Å] and the pyran-2,4-dione ring is 54.03 (6)°. An intra-molecular N-H⋯O hydrogen bond closes an S(6) ring. The same H atom also participates in an inter-molecular N-H⋯O hydrogen bond, which generates an inversion dimer. The dimers are linked by weak C-H⋯O contacts, thereby forming a three-dimensional network.

Keywords: crystal structure; indazole derivatives; pharmacological activity; pyran-2,4-dione.