1′-Methyl-4′-phenyl-H-fluorene-9-spiro-3′-pyrrolidine-2′-spiro-3′′-1H-indol-2′'(3′′H)-one

Abstract

Key indicatorsSingle-crystal X-ray study T = 273 K Mean '(C±C) = 0.006 A Ê R factor = 0.080 wR factor = 0.179 Data-to-parameter ratio = 13.5For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e. # 2004 International Union of Crystallography Printed in Great Britain ± all rights reservedIn the title compound, C 30 H 24 N 2 O, the pyrrolidine ring adopts a twist conformation. The dihedral angle between the¯uorene ring system and the phenyl ring is 68.3 (1) . In the solid state, inversion-related molecules form dimers via NÐHÁ Á ÁO hydrogen bonds. Weak CÐHÁ Á Á% interactions also stabilize the molecular packing.

Methyl 3-[(1H-benzimidazol-1-yl)methyl]-1-methyl-4-(4-methylphenyl)-2′-oxopyrrolidine-2-spiro-3′-1-benzimidazole-3-carboxylate

“…1. The geometry of the pyrrolidine and oxindole residues of (I) compares well with that reported in other related structures (see, for example, Aravindan et al, 2004;Selvanayagam et al, 2005;Seshadri et al, 2003).…”

“…For general background to pyrrolidine derivatives, see: Obniska et al (2010); Morais et al (2009); Bello et al (2010); Moreno-Clavijo et al (2009); Cheng et al (2008). For related structures, see: Aravindan et al (2004); Selvanayagam et al (2005); Seshadri et al (2003). For ring-puckering parameters, see: Cremer & Pople (1975).…”