JEE Main On 8 April 2017 Question 15
Question: The IUPAC name of the following compound is [JEE Online 08-04-2017]
Options:
A) 2-Ethyl-1, 1-dimethylcyclohexane
B) 1, 1-Dimethyl 1-2-ethylcyclohexane
C) 2, 2-Dimethyl-1-1-ethylcyclohexane
D) 1-Ethyl-2,2-dimethylcyclohexane
Show Answer
Answer:
Correct Answer: A
Solution:
- The IUPAC name of the compound is 2-Ethyl-1, 1-dimethylcyclohexane . The parent compound is six member cyclic compound. Hence it is named cyclohexane . One ethyl and two methyl groups are present as substituents. The names of substituents are written in alphabetical order. Lowest sum of locants rule is followed while numbering substituents.
