N-(3-Chloro-1,4-dioxo-1,4-di­hydro­naph­thalen-2-yl)-N-propionylpropionamide

In the title mol­ecule, C₁₆H₁₄ClNO₄, the four essentially planar atoms of the imide group [r.m.s. deviation = 0.0286 (11) Å] form a dihedral angle of 77.36 (13)° with the naphtho­quinone group [maximun deviation = 0.111 (2) Å for the carbonyl O atom in the naphthalene 1-position] and the two imide carbonyl groups are oriented anti with respect to each other. In the crystal, mol­ecules are connected by weak C—H...O hydrogen bonds, as well as π–π stacking inter­actions [centroid–centroid distance = 3.888 (3) Å], forming a three-dimensional network.

2-Chloro-N-(2-chloro­benzo­yl)-N-(2-ethyl-4-oxo-3,4-di­hydro­quinazolin-3-yl)benzamide

In the title compound, C₂₄H₁₇Cl₂N₃O₃, the quinazolinone ring system is close to planar (r.m.s. deviation = 0.0132 Å), with the imide unit almost perpendicular to it, subtending a dihedral angle of 89.1 (1)°. However, the imide unit itself is not planar, the dihedral angle between the two O=C—N components being 34.6 (1)°. The dihedral angle between the two chlorobenzene rings is 40.50 (7)°, while the angles between these rings and the imide moiety are 54.6 (1) and 58.2 (1)°, respectively. The dihedral angles between the 2-chloro­phenyl rings and the quinazolinone ring system are 48.77 (5) and 32.92 (7)° for rings A and B, respectively. In the crystal, weak C—H...O inter­actions link the mol­ecules into a three-dimensional array.