[Open access]

[Contents scheme]

Acta Cryst. (2013). E69, o441
[ doi:10.1107/S1600536813004868 ]

A diastereomer of methyl (1R,3'S)-1',1''-dimethyl-2,2''-dioxo-2H-dispiro[acenaphthylene-1,2'-pyrrolidine-3',3''-indoline]-4'-carboxylate

G. Ganesh, P. S. Yuvaraj, P. S. Kannan, B. S. R. Reddy and A. SubbiahPandi

Abstract: In the title compound, C26H22N2O4, the central pyrrolidine ring adopts a twist conformation and the cyclopentane ring of the dihydroacenapthylene group adopts an envelope conformation with the spiro C atom as the flap. The naphthalene ring system of the dihydroacenaphthylene group forms dihedral angles of 83.4 (9) and 61.3 (7)°, respectively, with the mean planes of the pyrrolidine and indole rings. The crystal packing is stabilized by intermolecular C-H...O hydrogen bonds. The title compound is a diastereomer of a previously reported structure.

Copyright © International Union of Crystallography
IUCr Webmaster