Abstract
The title compound, C13H17NO3, was synthesized from methyl 3-oxobutanoate and 4-ethoxybenzenamine using a catalytic amount of InBr3 under solvent-free conditions. The 3-aminobut-2-enoic acid methyl ester group is planar and forms a dihedral angle of 83.4 (1)° with the benzene ring. The ethoxy group is slightly twisted away from the benzene ring [dihedral angle = 13.8 (1)°]. An intramolecular N—H⋯O hydrogen bond generating an S(6) ring is observed. Molecules are linked into a chain along the b axis by intermolecular C—H⋯O hydrogen bonding.
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