View Keto Enol Tautomerism Stability Pics. The keto and enol forms are said to be tautomers of each other. It provides the acid catalyzed reaction.
It's worth mentioning that this is not resonance. This organic chemistry video tutorial explains the concept of the keto enol taumerism / tautomerization process. Acids and bases both bring about the establishment of an equilibrium between ketones (or aldehydes) and their enol forms, which contain a hydroxyl group.
As written, the equilibrium lies strongly to the left.
It's never our intention to use it to pick the preferred form (something which is beyond. Tautomerism is the phenomenon that occurs in any reaction that simply involves the intramolecular transfer of a proton. An equilibrium is established between the two tautomers (structurally distinct compounds) and there is a rapid shift back and forth between the distinct compounds. Keto tautomeric forms, with only a small amount of enol forms present.
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