Research Article: 1-(2-Hy­droxy­eth­yl)-1′-methyl-4′-(naph­thal­en-1-yl)-1′′,2′′,3′′,4′′-tetra­hydro­dispiro­[indoline-3,2′-pyrrolidine-3′,2′′-naphthalene]-2,1′′-dione

Date Published: March 01, 2012

Publisher: International Union of Crystallography

Author(s): S. Selvanayagam, B. Sridhar, P. Saravanan, R. Raghunathan.


In the title compound, C33H30N2O3, the pyrrolidine ring adopts an envelope conformation in which the H atom attached the an ortho-C atom deviates from the plane, whereas the cyclo­hexa­none ring in the tetra­hydro­naphthalene fused-ring system adopts a sofa conformation. The oxindoline ring system is almost perpendicular with respect to the mean plane of the pyrrolidine ring, with a dihedral angle of 89.0 (1)°. Five intra­molecular C—H⋯O close contacts are observed. In the crystal, mol­ecules associate via O—H⋯O hydrogen bonds, forming R22(14) dimers. In addition, there are weak C—H⋯π inter­actions.

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For general background to pyrrolidine derivatives, see: Sundar et al. (2011 ▶); Crooks & Sommerville (1982 ▶); Stylianakis et al. (2003 ▶). For a related structure, see: Selvanayagam, Ravikumar et al. (2011 ▶); Selvanayagam, Sridhar et al. (2011 ▶). For ring-puckering parameters, see: Cremer & Pople (1975 ▶); Nardelli (1983 ▶).