Chapter 14.21, Problem 3QQ

Interpretation Introduction

Interpretation:

In the thioether, ${\text{CH}}_{\text{3}}-\text{S}-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{3}}$, the ${\text{CH}}_{\text{3}}-\text{S}-$ group present is called as what has to be chosen from the given options.

Concept Introduction:

Any organic molecule can be named by using certain rules given by IUPAC (International Union for Pure and applied chemistry).  IUPAC name consists of three parts in major namely Prefix suffix and root word.

Prefix represents the substituent present in the molecule and its position in the root name.

Suffix denotes the presence of functional group if any in the molecule.  It can be an alkene, alkyne, alcohol, carboxylic acid, alcohol etc.

Root word represents the longest continuous carbon skeleton of the organic molecule.

IUPAC rules for naming thioether:

• ✓ The base name is found from the longest carbon chain present in thioether.
• ✓ The suffix –thio has to be added in order to obtain the alkylthio group name.  For example, ethyl becomes as ethylthio, methyl becomes as methylthio etc.
• ✓ Alkylthio name has to be placed first with the number (carbon atom to which the alkykthio group is attached) followed by the base name.