Q1. - Organic Chemistry

Question

Question: Draw the enol or keto tautomer(s) of each compound.

Step-by-Step Solution

Answer

Answer

The enol or keto tautomer(s) of each compound are shown below.

Step 1: Definition of tautomers

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

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

Enol and keto forms are tautomers that are present in the carbonyl group and differ in the position of a double bond and a proton. They are constitutional isomers that are found to be in equilibrium with each other. 

Step 3: Based on stability

Generally, the keto form is found to be more stable than the enol form. This is due to the reason that C=O is a stronger bond than C=C.

 

The enol or keto tautomer(s) of each compound is shown below.

                    Keto-enol forms of compound a

            Keto-enol forms of compound b

                         Keto-enol forms of compound c

                         Keto-enol forms of compound d

                        Keto-enol forms of compound e

                       Keto-enol forms of compound f