2-(4-Bromo­phenoxy)-N-[5-(E)-styryl-1,3,4-thia­diazol-2-yl]acet­amide

In the title compound, C₁₈H₁₄BrN₃O₂S, the three rings are nearly coplanar. In the crystal structure, intermolecular N—H...N and C—H...O hydrogen-bond interactions link the mol­ecules into ribbons, displaying alternate rings of graph-set motifs R₂²(8) and R₂²(14).

1-(4-Methyl­benzoyl)-3-{5-[4-(tri­fluoro­methyl)­phenyl]-1,3,4-thia­diazol-2-yl}­urea

The title compound, C₁₈H₁₃F₃N₄O₂S, forms stacks via a three-dimensional hydrogen-bonding network, which involves intramolecular N—H...O, intermolecular C—H...O and paired N—H...O hydrogen bonds.

(1R,2R,2′S)-2-(4-Methyl­phenyl­sulfonamido)-1-(pyrrolidine-2′-carboxamido)cyclo­hexa­ne

The title compound, C₁₈H₂₇N₃O₃S, is an organocatalyst prepared from (1R,2R)-cyclo­hexa­ne-1,2-diamine. There are bifurcated N—H...N/O intra­molecular hydrogen bonds and N—H...O and C—H...O inter­molecular inter­actions.