Ethyl 2-amino-4-(3-nitrophenyl)-4H-1-benzothieno[3,2-b]pyran-3-carboxylate

Abstract

The molecule of the title compound, C20H16N 2O5S, is built up by one fused five-membered and two fused six-membered rings linked to ethoxycarbonyl and 3-nitrophenyl groups. The benzothienopyran ring system is nearly planar (r.m.s deviation = 0.0392Å) and forms a dihedral angle of 86.90(6)° with the aromatic ring of the nitrobenzene group. In the crystal, molecules are linked by N - H⋯O hydrogen bonds and by π-π interactions between the phenyl ring and the six-membered heterocyle [intercentroid distance = 3.5819(8)Å], forming a three-dimensional network. © 2014 CrossMark.