Question

Explain why the following is an incorrect IUPAC name. 1,3-Dimethylbutane

Answer 1

Answer:

a. The longest chain is chosen incorrectly.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to firstly draw the structural formula of the 1,3-Dimethylbutane:

$CH_3-CH_2-CH(CH3)-CH_2-CH_3$

Thus, we can see that the correct name should be 3-methylpentane since the longest chain was chosen incorrectly, as it must have five carbon atoms.

Regards!