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 two phenyl rings are 74.87 (9) and 29.09 (9)degrees. There is a short N-H center dot center dot center dot O contact in the molecule with an S(5) ring motif. In the crystal, pairs of N-H center dot center dot center dot O hydrogen bonds link adjacent molecules into inversion dimers which are reinforced by C-H center dot center dot center dot O hydrogen bonds, forming an R-1(2) (6) R-2(2)(10) R-1(2)(6) ring motif. The dimers are linked by further C-H center dot center dot center dot O hydrogen bonds forming slab-like two-dimensional networks lying parallel to (001)

9-(3-Bromo-5-chloro-2-hydroxyphenyl)10-(2-hydroxyethyl)-3,6-diphenyl-3,4,9,10-tetrahydroacridine-1,8(2H,5H)dione

In the title compound, C33H27BrClNO4, the dihydropyridine ring adopts a flattened boat conformation. The molecular conformation is stabilized by an intramolecular O-H center dot center dot center dot O hydrogen bond, with an S(8) ring motif. In the crystal, O-H center dot center dot center dot O, C-H center dot center dot center dot O and C-H center dot center dot center dot Cl hydrogen bonds, and C-H center dot center dot center dot pi interactions link the molecules, forming a three dimensional network. In the acridinedione ring system, the two ring C atoms at the 2-and 3-positions, and the C atom at the 6-position and the atoms of the phenyl ring attached to the C atom at the 6-position are disordered over two sets of sites with occupancy ratios of 0.783 ( 5): 0.217(5) and 0.526 (18): 0.474 (18), respectively