O-Ethyl S-{(S)-1-oxo-1-[(R)-2-oxo-4-phenyl­oxazolidin-3-yl]propan-2-yl} carbonodi­thio­ate

In the title compound, C₁₅H₁₇NO₄S₂, synthesized by addition of O-ethylxanthic acid potassium salt to a diastereomeric mixture of (4R)-3-(2-chloro­propano­yl)-4-phenyl­oxazolidin-2-one, the oxazolidinone ring has a twist conformation on the C—C bond. The phenyl ring is inclined to the mean plane of the oxazolidinone ring by 76.4 (3)°. In the chain the methine H atom is involved in a C—H...S and a C—H...O intra­molecular inter­action. In the crystal, mol­ecules are linked by C—H...π inter­actions, forming chains along [001]. The S configuration at the C atom to which the xanthate group is attached was determined by comparison to the known R configuration of the C atom to which the phenyl group is attached.

Crystal structure of N-[(E)-(1,3-benzodioxol-5-yl)­methyl­idene]-4-chloro­aniline

In the title compound, C₁₄H₁₀ClNO₂, obtained by the condensation of 4-chloro­aniline and piperonal, the five-membered ring is almost planar (r.m.s. deviation = 0.023 Å) and the dihedral angle between the aromatic rings is 43.22 (14)°. In the crystal, a short O...Cl contact of 3.173 (2) Å is observed. The mol­ecules are arranged into corrugated (010) layers.