Abstract
In the title molecule, C
18
H
16
N
2
O
3
, the five-membered ring has an envelope conformation, with the substituted C atom deviating by 0.342 (4) Å from the mean plane
P
calculated for the remainder of the non-H atoms of the 2,3-dihydro-1
H
-indene fragment. The mean planes of quinazoline-2,4(1
H
,3
H
)-dione fragment and
P
form a dihedral angle of 59.08 (4)°. In the crystal, pairs of N—H⋯O hydrogen bonds link molecules into inversion dimers, and weak C—H⋯O hydrogen bonds and π–π interactions between the benzene rings of the quinazoline ring systems [centroid–centroid distance = 3.538 (3) Å] further consolidate the packing.