Abstract
In the title compound, C20H20N2O3, the ten atoms comprising the quinazoline ring are essentially planar (r.m.s. deviation = 0.024 A(degrees)), and this plane is almost orthogonal to the terminal phenyl ring [dihedral angle = 82.87 (7)(degrees)]. The conformation about the ethylene bond [1.335 (2) A(degrees)] is E and there is a significant twist between this residue and the adjacent phenyl ring [C-C-C-torsion angle = -48.4 (3)(degrees) ]. The crystal structure features centrosymmetric dimeric units linked by pairs of N-H...O hydrogen bonds between the amide groups which lead to eight- membered {...HNCO}(2) synthons. These are consolidated into a three-dimensional architecture by C-H ...O, C-H...and pi-pi interactions [centroid-centroid distances = 3.5087 (8) and 3.5645 (9) A(degrees)].