Chapter 26, Problem 26.7P

Interpretation Introduction

(a)

Interpretation:

The structure of the conjugate acid of $4-\left(\text{dimethylamino}\right)\text{pyridine}$ is to be drawn. Along with the help of resonance structure, the reason as to why $4-\left(\text{dimethylamino}\right)\text{pyridine}$ is more basic than pyridine is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of $4-\left(\text{dimethylamino}\right)\text{pyridine}$ with ${\text{CH}}_{\text{3}}\text{I}$ is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.