ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, cilt.77, ss.643-651, 2021 (ESCI)
In the title molecule, C18H16N2O3, the dihydroquinoxaline moiety, with the exception of the N atom is essentially planar with the inner part of the methylpropanoate group (CH2-CH2-O) nearly perpendicular to it. In the crystal, inversion dimers formed by C-H center dot center dot center dot O hydrogen bonds are connected into oblique stacks by pi-stacking and C-H center dot center dot center dot pi(ring) interactions.