2-(4-Chloro­phen­yl)-4-phenyl-1,2-di­hydro­quinazoline

In the title compound, C₂₀H₁₅ClN₂, the pyrimidine ring is in a flattened half-chair conformation. The phenyl and chloro-substituted benzene rings form dihedral angles of 84.97 (5) and 80.23 (4)°, respectively, with the benzene ring of the di­hydro­quinazoline group. The dihedral angle between the phenyl and chloro-substituted benzene rings is 61.71 (5)°. In the crystal, mol­ecules are arranged in inter­secting layers parallel to (101) and (-102), with N—H...N hydrogen bonds linking mol­ecules along [010]. In addition, a weak C—H...π inter­action is observed.

2-(2-Chloro-8-methyl­quinolin-3-yl)-4-phenyl-1,2-di­hydro­quinazoline

In the title compound, C₂₄H₁₈ClN₃, the di­hydro­quinazoline and methyl-substituted quinoline benzene rings make a dihedral angle of 78.18 (4)° and form dihedral angles of 45.91 (5) and 79.80 (4)°, respectively, with the phenyl ring. The dihedral angle between the phenyl ring of di­hydro­quinazoline and the methyl-substituted benzene ring of quinoline is 78.18 (4)°. The crystal packing can be described as crossed layers parallel to the (011) and (0-11) planes. The structure features N—H...N hydrogen bonds and π–π inter­actions [centroid–centroid distance between phenyl rings = 3.7301 (9) Å].