Ethyl 2-benzyl-3-[3-(4-chloro­phen­yl)-1-phenyl-1H-pyrazol-4-yl]-4,6-dioxo-5-phenyl­octa­hydro­pyrrolo­[3,4-c]pyrrole-1-carboxyl­ate

The title compound, C₃₇H₃₁ClN₄O₄, crystallizes with two mol­ecules (A and B) in the asymmetric unit. The pyrrole rings in both mol­ecules are connected via cis fusion, whereas one ring has a twisted conformation and the other assumes a half-chair conformation. In the crystal, the A mol­ecules form inversion dimers via a pair of C—H...Cl inter­actions, while the B mol­ecules form chains propagating in [10], via C—H...O inter­actions. In the crystal, there are also a number of C—H...π inter­actions present.

(E)-2-({2-[(E)-(Hy­droxy­imino)­meth­yl]phen­oxy}meth­yl)-3-p-tolyl­acrylonitrile

In the title compound, C₁₈H₁₆N₂O₂, the hy­droxy­ethanimine group is essentially coplanar with the ring to which it is attached (C—C—N—O torsion angle = −176.9°). Mol­ecules are linked into cyclic centrosymmetric R₂²(6) dimers via O—H...N hydrogen bonds.

Methyl (E)-2-({2-[(E)-(hy­droxy­imino)­meth­yl]phen­oxy}meth­yl)-3-phenyl­acrylate

In the title compound, C₁₈H₁₇NO₄, the hy­droxy­ethanimine group is essentially coplanar with the ring to which it is attached [C—C—N—O torsion angle = 179.94 (14)°]. The mol­ecules are linked into cyclic centrosymmetric R₂²(6) dimers via O—H...N hydrogen bonds and the crystal packing is further stabilized by C—H...O inter­actions.

(2E,4E)-Ethyl 5-(phenyl­sulfon­yl)penta-2,4-dienoate

In the title compound, C₁₃H₁₄O₄S, both C=C double bonds adopt an E conformation. In the crystal, mol­ecules are linked into centrosymmetric R₂²(14) dimers via pairs of C—H...O hydrogen bonds.

Diethyl [(2-bromo­anilino)(1,3-diphenyl-1H-pyrazol-4-yl)meth­yl]phospho­nate

In the title compound, C₂₆H₂₇BrN₃O₃P, the central pyrazole ring forms a dihedral angle of 71.7 (2)° with the bromo­phenyl ring. In the crystal, mol­ecules are linked by pairs of N—H...O hydrogen bonds, forming inversion dimers with R₂²(10) ring motifs. Four C atoms of the 3-phenyl ring are disordered over two sets of sites [site occupancies = 0.745 (6) and 0.225 (6)].

2,2'-Diisopropoxy-5,5'-methyl­enedi­benz­alde­hyde

Mol­ecules of the title compound, C₂₁H₂₄O₄, are located on a twofold rotation axis running through the central methyl­ene C atom. The aldehyde group is coplanar with the benzene ring [C-C-C-O = 175.7 (4) °].

(2E,2′E)-Dimethyl 2,2′-[(phenyl­aza­nedi­yl)bis­(methyl­ene)]bis­(3-phenyl­acrylate)

The C=C double bonds in the title compound, C₂₈H₂₇NO₄, adopt an E conformation. In the crystal, pairs of C—H...O hydrogen bonds link the mol­ecules into inversion dimers.

(Z)-3-(2-Chloro­benz­yl)-1,5-benzothia­zepin-4(5H)-one

In the crystal structure of the title compound, C₁₆H₁₂ClNOS, the mol­ecules are linked into centrosymmetric R₂²(8) dimers via pairs of N—H...O hydrogen bonds. The seven-membered ring adopts a boat conformation.

(Z)-3-Benzyl-1,5-benzothia­zepin-4(5H)-one

In the crystal structure of the title compound, C₁₆H₁₃NOS, mol­ecules are linked into cyclic centrosymmetric R₂²(8) dimers via pairs of N—H...O hydrogen bonds. The seven-membered ring adopts a boat conformation.

2,6-Dibromo-4-formyl­phenyl 3-phenyl­prop-2-enoate

Mol­ecules of the title compound, C₁₆H₁₀Br₂O₃, adopt an E conformation about the C=C double bond. The dihedral angle between the two aromatic rings is 78.0 (7)°. In the crystal, mol­ecules are linked through weak C—H...O hydrogen bonds.

1-(2-Carb­oxy­eth­yl)-5-ethyl-2-methyl­pyridinium chloride

In the crystal structure of the title salt, C₁₁H₁₆NO₂⁺·Cl⁻, the cations and anions are linked by O—H...Cl hydrogen bonds. The structure is further stabilized by weak C—H...Cl hydrogen bonds.