Crystal structure of 2-methylamino-3-nitro-4-p-tolylpyrano[3,2-c]chromen-5(4H)-one

Abstract

In the racemic title compound, C20H16N2O5, the pyran ring adopts a shallow envelope conformation, with the stereogenic C atom displaced from the other atoms by 0.273 (2) Å. The dihedral angle between the fused-ring system and the pendant p-tolyl group is 87.62 (7)°. The mol­ecular conformation is consolidated by an intra­molecular N—H⋯O hydrogen bond, which generates an S(6) ring. In the crystal, mol­ecules are linked by C—H⋯O inter­actions, resulting in [010] chains.