Chapter 26, Problem 31P

Interpretation Introduction

Interpretation:

The structures of compounds A through D isolated as intermediates in the synthesis of isoleucine from $\text{2-bromobutane}$ have to be drawn. Also, the alkyl halide that is used as the starting material for the synthesis of phenylalanine by the similar procedure has to be stated.

Concept introduction:

A molecule that consists of a ketone group on the $\text{β-}$ carbon atom of an ester is generally known as $\text{β-}$ keto ester.

It contains an active methylene group between two carbonyl groups in its structure.

Diethyl malonate and ethyl acetoacetate are some examples of $\text{β-}$ keto ester.

A mixture that has equal amount of enantiomers is commonly known as racemic mixture.