Three N-Aryl-Substituted 3-hydroxypyridin-4-ones

The molecular structures of 2-ethyl-3-hydroxy-1-(3,4-dimethylphenyl)pyridin-4-one, C₁₅H₁₇NO₂, (1), 2-ethyl-3-hydroxy-1-(4-methylphenyl)pyridin-4-one, C₁₄H₁₅NO₂, (2) and 2-ethyl-3-hydroxy-1-(4-methoxyphenyl)pyridin-4-one, C₁₄H₁₅NO₃, (3) have been determined. The compounds all exhibit mutually hydrogen-bonded dimeric pairs. In the case of (1) the molecules of the dimer are symmetry related while in (2) and (3) two independent molecules of the asymmetric unit are linked.

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