Chapter 21, Problem 21.40AP

Interpretation Introduction

(a)

Interpretation:

The synthesis of the compound $A$ from $3\text{-}$ methylbenzaldehyde by the use other any other reagents is to be predicted.

Concept introduction:

The reagents ${\text{NaClO}}_{\text{2}}$ and ${\text{NaH}}_{\text{2}}{\text{PO}}_{\text{4}}$ are good oxidizing agents which convert aldehyde into carboxylic acid.

The reagent ${\text{SOCl}}_{\text{2}}$ is good nucleophile. It can convert a carboxylic acid into an acyl chloride.

The reaction of an acyl chloride with amine result in amide formation.

Interpretation Introduction

(b)

Interpretation:

The synthesis ofthe compound $B$ from $2\text{-}$ bromobenzoic acid by the use other any other reagents is to be predicted.

Concept introduction:

Esters are formed by the reaction of an acid with an alcohol. The process of formation of esters is known as esterification.

Grignard reagents are organometallic compounds which are prepared using alkyl halides in the presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases.