Chapter 21.1, Problem 2P

Interpretation Introduction

Interpretation:

The structural formulas for the two most stable enol isomers of the given $\text{β-}$ dicarbonyl compounds that show an intramolecular hydrogen bond is to be stated.

Concept Introduction:

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Enol refers to an intermediate structure that consists of an alkene group connected with a hydroxyl group at one end of its double bond.

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In keto-enol tautomerism, the hydrogen atom that is connected to the $\text{α}$ carbon atom is transferred to the carbonyl oxygen atom.

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Hydrogen bonding can be of two types; one is intramolecular hydrogen bonding occurs within the molecule and second is intermolecular hydrogen bondingoccurs between different two molecules.