Crystal structure of 3-(4-meth­oxy­phen­yl)-2,3-di­hydro-1H-naphtho­[2,1-b]pyran-1-one

In the title compound, C(20)H(16)O(3), the hydro­pyran ring adopts a distorted half-chair conformation with the methine C atom and the ring O atom displaced by −0.554 (2) and 0.158 (1) Å, respectively, from the plane of the other four atoms (r.m.s. deviation = 0.020 Å). Its mean plane (all atoms) is inclined to the naphthalene ring system at a dihedral angle of 11.67 (1)°. The dihedral angle between the napthalene ring system and the phenyl ring is 71.84 (1)°. In the crystal, no diectional inter­actions beyond van der Waals contacts could be identified.