5-Chloro-5′′-[4-(dimethylamino)benzylidene]-4′-[4- (dimethylamino)phenyl]-1′,1′′-dimethyldispiro[indoline-3, 2′-pyrrolidine-3′,3′′-piperidine]-2,4′′- dione

Abstract

The title compound, C34H38ClN5O 2, has spiro links connecting the pyrrolidine ring and indole residue, as well as the piperidine and pyrrolidine rings. A half-chair conformation is found for the piperidine ring with the C atom connected to the spiro-C atom lying 0.738(4)Å out of the plane of the remaining five atoms (r.m.s. deviation = 0.0407Å). The methylene C atom is the flap in the envelope conformation for the pyrrolidine ring. In the crystal, supramolecular chains are sustained by alternating eight-membered {⋯HNCO}2 and 14-membered {⋯HC5O}2 synthons. Chains are connected into a three-dimensional network by (pyrrolidine-bound phenyl-methyl)C- H⋯π(pyrrolidine-bound phenyl) edge-to-face interactions.