No abstract

In the title compound, C17H14O3, the dihedral angle between the phenyl ring and the benzene ring of the chromanone moiety is 67.78 (3)°. The six-membered heterocyclic ring of the chromanone moiety adopts a half-chair conformation. The structure is stabilized by weak inter­molecular C—H⋯O inter­actions that link the mol­ecules into inversion dimers.

Key indicators: single-crystal X-ray study; T = 297 K; mean (C-C) = 0.003 Å; R factor = 0.055; wR factor = 0.160; data-to-parameter ratio = 17.6. organic compounds o4412 # 2007 International Union of Crystallography

In the title compound, C29H23NO2, the pyrrolidine ring adopts a twisted conformation about one of the C—N bonds. The acenaphthone ring (r.m.s. deviation = 0.025 Å) lies almost perpendicular to the pyrrolidine ring [dihedral angle = 88.08 (8)°]. The dihedral angle between the phenyl rings is 88.12 (11)°. In the crystal structure, weak C—H⋯π inter­actions connect the mol­ecules.

In the crystal structure of the title compound, C34H25NO3, the dihydropyrone ring is in a half‐chair conformation and the five‐membered heterocyclic ring is in an envelope conformation.