Ethyl 6'-amino-5'-cyano-2'-methyl-2-oxospiro-[indoline-3,4'-pyran]-3'-carboxyl-ate

Jing Wang; Song-Lei Zhu

doi:10.1107/S1600536809054075

Ethyl 6'-amino-5'-cyano-2'-methyl-2-oxospiro-[indoline-3,4'-pyran]-3'-carboxyl-ate

Acta Crystallogr Sect E Struct Rep Online. 2009 Dec 19;66(Pt 1):o197. doi: 10.1107/S1600536809054075.

Authors

Jing Wang¹, Song-Lei Zhu

Affiliation

¹ Department of Chemistry, Xuzhou Medical College, Xuzhou 221004, People's Republic of China.

Abstract

In the title compound, C(17)H(15)N(3)O(4), the atoms of the spiro pyran ring are nearly planar with a maximum deviation of 0.0188 (14) Å. The benzene and pyrrole rings make a dihedral angle of 5.71 (6)°. The indole system and the pyran ring are oriented at a dihedral angle of 82.94 (3)°. The crystal structure is stabilized by inter-molecular classical and non-classical N-H⋯O, N-H⋯N and C-H⋯O hydrogen bonds.