Which of the following is the correct (IUPAC) name? | Chemistry | SolveeIt

Question

Which of the following is the correct $IUPAC$ name?

$3$ -Ethyl- $4,4$ -dimethylheptane

$4,4$ -Dimethyl- $3$ -ethylheptane

$5$ -Ethyl- $4,4$ -dimethylheptane

$4,4$ -Bis(methyl)- $3$ -ethylheptane

Answer

$3$ -Ethyl- $4,4$ -dimethylheptane

Explanation

Solution

The structure $CH_3 -CH_2 - CH_2 -\underset{\overset{|}{C}H_3}{\overset{\underset{|}{C}H_3}{C}}-\underset{\overset{|}{C}H_3}{C}H - CH_2 -CH_3$ while writing IUPAC name, alkyl groups are written in alphabetical priority, thus lower locant $3$ is assigned to ethyl.

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Solution