1′,1′′-Dimethyl-4′-(naphthalen-1-yl)-1,2,3, 4-tetrahydronaphthalene-2-spiro-3′-pyrrolidine-2′-spiro- 3′′-indoline-1,2′′-dione

Abstract

In the title compound, C32H28N2O 2, the pyrrolidine ring adopts an envelope conformation, whereas the cyclo-hexa-none ring in the tetrahydronaphthalene fused-ring system adopts a half-chair conformation. The oxindole ring system is oriented at an angle of 48.2 (1)° with respect to the naphthyl ring system. An intramolecular C - H⋯O close contact is observed. In the crystal, molecules associate via two C - H⋯O hydrogen bonds, forming R 2 2(14) and R 2 2(10) dimers.