N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)formamide

In the title compound, C12H13N3O2, the dihedral angle between the pyrazole and benzene rings is 50.0 (3)°. In the crystal, mol­ecules are linked by inter­molecular N—H⋯O hydrogen bonds to form a three-dimensional network. Two weak C—H⋯π inter­actions reinforce the crystal packing

N-(4-Butanoyl-3-hy­droxy­phen­yl)butanamide

The title compound, C14H19NO3, was prepared via the intra­molecular rearrangement of 3-(butanoyl­amino)­phenyl butano­ate in the presence of anhydrous aluminium chloride. The near coplanarity of the aromatic ring, the amide group and the carbonyl group of the butanoyl fragment [N—C—C—C = −179.65 (17) and O—C—C—C = −178.34 (17)°] results from the intra­molecular O—H⋯O and C—H⋯O hydrogen bonds. In the crystal, the mol­ecules form a one-dimensional polymeric structure via N—H⋯O inter­actions between their amide groups