Pyridone may refer to several organic compounds with the formula C5H4NH(O): 2-Pyridone 3-hydroxypyridine 4-Pyridone These can adopt three tautomers, a oxo form, a zwitterion form, and a enol form. Whereas 2-pyridone (α) and 4-pyridone (γ) predominantly adopt the oxo form, the 3-pyridone (β) cannot, and instead adopts an equilibrium of the zwitterion form, pyridin-1-ium-3-olate, and the enol form, 3-hydroxypyridine (the canonical form).
Pyridone may refer to several organic compounds with the formula C5H4NH(O): 2-Pyridone 3-hydroxypyridine 4-Pyridone These can adopt three tautomers, a oxo form, a zwitterion form, and a enol form. Whereas 2-pyridone (α) and 4-pyridone (γ) predominantly adopt the oxo form, the 3-pyridone (β) cannot, and instead adopts an equilibrium of the zwitterion form, pyridin-1-ium-3-olate, and the enol form, 3-hydroxypyridine (the canonical form).
Source: Wikipedia "Pyridone" · CC BY-SA 4.0
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