Ethyl 2-(2-oxo-4-phenyl-2,3-dihydro-1H-1,5-benzodiazepin-1-yl)acetate

Abstract

The seven-membered ring in the title compound, C19H18N2O3, adopts a boat conformation with the two phenylene C atoms representing the stern and the methylene C atom the prow. The dihedral angle between the best plane through the seven-membered ring (r.m.s deviation = 0.343 Å) and the phenyl substituent is 31.9 (1)°. The dihedral angle between this best plane and the best plane through the ethoxycarbonylmethyl substituent (r.m.s. deviation = 0.058 Å) is 72.2 (1)°.