Chapter 21, Problem 21.74P

Interpretation Introduction

Interpretation:

A complete way forgiven conversion is to be determined.

Concept introduction:

The protecting group is used as a temporary cover in synthesis for the essential functional group and avoids the interferes with another reaction. The protecting group generally use in multistep organic synthesis due to chemoselectivity. ${\text{CH}}_{\text{2}}{\text{N}}_{\text{2}}$ is the good protecting group for protecting the carboxylic acid group. Removal of ${\text{-CH}}_{\text{3}}$ the group by using a strong base $\text{(NaOH)}$ followed by an acid workup. Synthesis may be designed by thinking in the reverse direction, from the product to the starting compound, in a method called retrosynthesis. Retrosynthesis involves starting with the product and determining a suitable precursor from which it can be synthesized, without considering specific reactions.