Ethyl 4-anilino-2-methyl-5-oxo-1-phenyl-2,5-di­hydro-1H-pyrrole-2-carboxyl­ate

In the title compound, C₂₀H₂₀N₂O₃, the central 2,5-di­hydro-1H-pyrrole ring [r.m.s. deviation = 0.014 (1) Å] is oriented at dihedral angles of 77.81 (6) and 25.33 (6)°, respectively, to the attached phenyl ring and the aniline phenyl ring. An intra­molecular N—H...O hydrogen bond occurs. In the crystal, mol­ecules are linked through pairs of N—H...O hydrogen bonds, forming inversion dimers with an R₂²(10) ring motif. Two weak C—H...π inter­actions are also observed.

Ethyl 4-(4-chloro­anilino)-1-(4-chloro­phen­yl)-2-methyl-5-oxo-2,5-di­hydro-1H-pyrrole-2-carboxyl­ate

In the title compound, C₂₀H₁₈Cl₂N₂O₃, the dihedral angles between the central 2,5-di­hydro-1H-pyrrole ring and the phenyl rings are 74.87 (9) and 29.09 (9)°. Intra­molecular N—H...O and C—H...O hydrogen bonds occur. In the crystal, pairs of N—H...O hydrogen bonds link adjacent mol­ecules into inversion dimers and form an R₁²(6)R₂²(10)R₁²(6) ring motif through C—H...O hydrogen bonds.