Question

Write IUPAC name of the following compound: \[{{(C{{H}_{3}}C{{H}_{2}})}_{2}}NC{{H}_{3}}\]

Answer 1

Hint: Try solving this question by writing the structural formula of the compound first and then follow the rules of IUPAC nomenclature.

Complete step by step answer:
Let us solve this question by drawing the structural formula first.

Let us try to select a chain first.
The first thing to keep in mind is to select the longest continuous chain. Let us select the chain starting from the left most carbon – therefore the main chain is composed of two carbons and nitrogen.
The root word of the given compound is ‘ethane’. Now, because nitrogen is bonded to it, we need a suffix to represent it. Therefore, the suffix is ‘amine’.
We can say that this compound is ‘ethanamine’.
Now let us consider the leftover groups which are attached to nitrogen. The groups are ethyl and methyl groups.
Since both methyl and ethyl groups are attached to Nitrogen instead of carbon, we need to specify it.
So, the name becomes - N-Ethyl-N-methylethanamine
Therefore, the answer is – IUPAC name given the compound is N-Ethyl-N-methylethanamine.

Note: Keep the following points in mind -
\[-C{{H}_{2}}C{{H}_{3}}\] is an ethyl group since it is composed of two carbon atoms
\[-C{{H}_{3}}\] is a methyl group since it is composed of one carbon atom
\[-N{{H}_{3}}\] is an amine group. When we replace hydrogen attached to nitrogen with any other compound, it is called primary, secondary or tertiary amine (with respect to the number of replaced hydrogen atoms). In this case, this compound is a tertiary amine. (nitrogen is bound to three carbons)