4-(4-Methoxy­phen­yl)-1-phenyl­pyridine-2,6(1H,3H)-dione

In the title compound, C18H15NO3, the pyridine-2,6-dione ring adopts an envelope conformation. The phenyl ring lies approximately perpendicular to the mean plane of the pyridine-2,6-dione ring [dihedral angle = 81.5 (1)°], while the methoxy­phenyl ring is tilted to the same plane by a dihedral angle of 34.8 (1)°. Inter­molecular C—H⋯O inter­actions link the mol­ecules into chains along [100]

3-(4-Methoxy­phen­yl)pent-2-ene-1,5-dioic acid

In the title compound, C12H12O5, mol­ecules are linked into anti­parallel hydrogen-bonded sheets through inversion dimers generated via two O—H⋯O hydrogen bonds. Using the R 2 2(8) motif as a building block, hydrogen-bonded chains of a C 2 2(8) superstructure are then generated

Ethyl 4-(4-hydroxyphenyl)-6-methyl-2-oxo-1,2,3,4 tetrahydropyrimidine-5-carbox ylate monohydrate

There are three formula units in the asymmetric unit of the title compound, C14H16N2O4 center dot H2O. Molecules are linked by N-H center dot center dot center dot O hydrogen bonds into dimers with the common R-2(2)(8) graph-set motif. Between dimers, single N-H center dot center dot center dot O hydrogen bonds are formed between the other N-H group of each pyrimidine ring and the hydroxyl groups. The water molecules accept O-H center dot center dot center dot O hydrogen bonds from the hydroxyl groups and donate hydrogen bonds to the ester groups