3-Benzylidene-1′-methyl-4′-phenyldispiro[cyclopentane-1,3′-pyrrolidine-2′,1′′-acenaphthene]-2,2′′-dione

Abstract

In the title compound, C33H27NO2, the pyrrolidine ring adopts an envelope conformation, with the N atom as the flap. The cyclopentanone ring adopts a twisted conformation about the Cs—CH2 bond (s = spiro link). The dihedral angle between these rings (all atoms) is 82.02 (15)°. The packing features weak C—H...O interactions.

Keywords

• crystal structure
• Claisen–Schmidt condensation
• conformation