Q29. - Organic Chemistry

Question

Question: Draw enol tautomer(s) for each compound. Ignore stereoisomers.

Step-by-Step Solution

Answer

Answer

 

The enol tautomer(s) for each compound is shown below:

Step 1: Definition of tautomers

Tautomers are structural isomers of chemical compounds that readily interconvert in an acidic or a basic medium. This process of conversion of one tautomer into another is known as tautomerization. One example is keto-enol tautomers.

Step 2: Bonding pattern in case of a keto-enol tautomerization

Enol and keto forms are tautomers present in the carbonyl group, which differ in the position of a double bond and a proton. They are constitutional isomers found to be in equilibrium with each other. A keto has a C=O and an additional C-H bond, while an enol has a C-OH and a C=C bond.

 

Generally, keto is considered to be more stable due to the stronger C=O present.

Step 3: Keto-enol forms for the given compounds

              Keto-enol tautomerization in a.

              Keto-enol tautomerization in b.