Question

The IUPAC name of this compound is?

• A. 3-Ethyl-4,4-dimethylheptane
• B. 1,1-Diethyl-2,2-dimethylpentane
• C. 4,4-Dimethyl-5,5-diethylpentane
• D. 5,5-Diethyl-4,4-dimethylpentane

Answer 1

The correct option is A

3-Ethyl-4,4-dimethylheptane

First, check the parent chain.

Now, give numbers such that the more substituted substituent will get the lowest number.


Parent chain
7 carbon $\Rightarrow$ hept (word root)

Single bonds $\Rightarrow$ ane (suffix

$\to$ substituent at $C_{3}and{C}_4$ 3-ethyl-4,4-dimethyl(alphabetically)

Therefore, 3-Ethyl-4,4-dimethylheptane