Chapter 22, Problem 22.8P

Interpretation Introduction

Interpretation:

The enol forms of $\text{2-butanone}$ are to be drawn. The least stable structure of enol forms is to be stated. The explanation for the corresponding structure is to be stated.

Concept introduction:

In keto-enol tautomerism, the keto-enol forms of a compound are present in equilibrium with each other. Keto and enol forms both are tautomers of each other, they are inter-convertible to each other by the transfer of $\text{α}$-hydrogen.