Chapter 18, Problem 30P

Interpretation Introduction

Interpretation:

Three possible structures for the constitutional isomers of molecular formula ${\text{C}}_{\text{5}}{\text{H}}_{\text{13}}\text{N}$ should be drawn which containing a $1^0$ amine and one chirality center.

Concept Introduction:

There are two main classes of isomers − constitutional isomers and stereo isomers.

Constitutional Isomers have the same molecular formula but differ in the way the atoms are connected to each other.

Chirality is the presence of an asymmetric carbon center in a molecule and a molecule which contains a chiral center cannot superimpose on its mirror image. To consider as chiral, molecule or object and its mirror image should not superimpose. To consider as achiral, molecule or object and its mirror image should be superimposed with each other.

In the above diagram, where C is the chiral center/ asymmetric carbon center.

A, B, D, E are four different functional groups.

Amine − is an organic N compounds formed by replacing one or more H atoms of ${\text{NH}}_{\text{3}}$ .Amines are classified as $1^0,2^0\text{ or }{3}^0$ by the number of alkyl groups bonded to the N atom.

  $1^0$ amines - Consist only one $\text{C}-\text{N}$ bond.

  $2^0$ amines- Consist two $\text{C}-\text{N}$ bonds.

  $3^0$ amines- Consist three $\text{C}-\text{N}$ bonds.