JEE Main Chemistry question

IUPAC name of the branched heptane compound shown (bearing ethyl and methyl substituents) is

(A)3-Ethyl-4,4-dimethylheptaneCorrect
(B)1,1-Diethyl-2,2-dimethylpentane
(C)4,4-Dimethyl-5,5-diethylpentane
(D)5,5-Diethyl-4,4-dimethylpentane

Answer: (A)

Solution

IUPAC rules require selecting the longest possible chain; here that chain runs through one of the ethyl groups to give a heptane backbone bearing one ethyl and two methyl substituents, named

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Question ID VK-139936