The conversion of ethyl 2-oxocyclopentanecarboxylate to the given compound has to be shown. Concept introduction: When two molecules of an ester undergo condensation, then it is called claisen condensation. Like in aldol reaction, in claisen condensation one molecule is a nucleophile and the other molecule is an electrophile. A claisen condensation reaction is a reversible reaction and occurs in the presence of a strong base. The first step of claisen condensation is the removal of a proton from alpha carbon by a base and then the addition of enolate ion formed to the second ester molecule forming a β-ketoester.

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Chapter 19.6, Problem 19.11P

Interpretation Introduction

Interpretation:

The conversion of ethyl 2-oxocyclopentanecarboxylate to the given compound has to be shown.

Concept introduction:

When two molecules of an ester undergo condensation, then it is called claisen condensation. Like in aldol reaction, in claisen condensation one molecule is a nucleophile and the other molecule is an electrophile.

A claisen condensation reaction is a reversible reaction and occurs in the presence of a strong base.

The first step of claisen condensation is the removal of a proton from alpha carbon by a base and then the addition of enolate ion formed to the second ester molecule forming a β-ketoester.

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