Diethyl 3H-naphtho[2,1-b]pyran-2,3-dicarboxylate

Abstract

The sp3-hybridized methine C atom in the title compound, C19H18O5, lies out of the mean plane of the remaining 13 atoms of the naphthopyran fused-ring system by 0.571 (1) Å, and its H atom occupies a pseudo-equatorial site.