Question

What is enolization reaction?

Answer 1

• Enolization is generally a type of tautomerism known as Keto-enol tautomerization. In this process, Ketones are generally converted into enols (Alkenes having hydroxyl group attached) and exist in equilibrium.
• Enols are a type of reactive structure and are also formed as intermediate in the organic reactions.
• The removal of hydrogen occurs from the adjacent carbonyl group and is called the protonation of enol.
• The process of enolization occurs in ketones, esters, and aldehydes.
• The reaction condition for enolization reaction is that alpha hydrogen must be present in the adjacent carbonyl group where enols are formed.
• The mechanism of enol formation can be explained as follows
  • When an acid or base attacks ketones get converted into enols and enolates respectively.
  • The $\mathrm{\alpha }$ Hydrogen will be removed from carbonyl compounds that are ketone treated with base catalyst and there will be shifting of double bond from $\mathrm{C}=\mathrm{O}$ to $\mathrm{C}=\mathrm{C}$ leads to the formation of enols.