$ \text{IUPAC name of following compound (P) is:} $

$ \text{IUPAC name of following compound (P) is:} $

  1. $1-Ethyl-5,5-dimethylcyclohexane$
  2. $3-\text{Ethyl}-1,1-\text{dimethylcyclohexane}$
  3. $1$-$\text{Ethyl}$-$3,3$-$\text{dimethylcyclohexane}$
  4. $1,1$-$\text{Dimethyl}$-$3$-$\text{ethylcyclohexane}$

Solution

By IUPAC nomenclature,

The parent chain in this compound is the cyclohexane ring, which consists of six carbon atoms.

The substituents are:

Ethyl group  attached to third carbon.

Two methyl groups  attached to carbon $1$ .

The Numbering must be given the carbons in the cyclohexane ring so that  the substituents get the lowest numbers,

Hence, the name is $3$-ethyl $1,1$-dimethylcyclohexane

Asked in: JEE Main 2024 (27 Jan Shift 1)

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