Maximum enol content is in:

The maximum enol content in a compound is typically found when the keto-enol tautomeric equilibrium favors the formation of the enol form. In general, enol content is highest when the enol form is more stable compared to the keto form. Several factors can influence the stability of the enol form:

Resonance: Enols are stabilized by resonance structures that distribute the charge and reduce electron density on the oxygen atom. If resonance can occur, the enol form is more stable.

Hydrogen Bonding: Enols can form hydrogen bonds between the hydrogen atom of the hydroxyl group and an adjacent electronegative atom. This stabilizes the enol form.

Substituents: The presence of electron-withdrawing groups (like carbonyl groups or halogens) near the enolizable hydrogen can stabilize the enol form by making the keto form less favorable.

Ring Strain: In cyclic compounds, the formation of an enol may lead to the relief of ring strain, making the enol form more stable.

Without specific compounds provided, it's challenging to determine which molecule has the maximum enol content. The stability of the enol form varies from one compound to another based on its structure and the factors mentioned above. You would need to evaluate the structural characteristics of the specific molecules in question to determine which one has the maximum enol content.