Chapter 19, Problem 3PP

Interpretation Introduction

Interpretation: The product obtained from Dieckmann condensation of diethyl heptanedioate is to be identified and the fact that diethyl pentanedioate does not undergo Dieckmann condensation is to be accounted.

Concept introduction:

Dieckmann condensation are also known as intermolecular Claisen condensationsthatare useful for the synthesis of five or six membered ring.

Due to angle strain, the ring smaller than five membered ringis disfavored.