IUPAC name of (CH_3)_3C-CH_2-CHI-CH_3 is __________

MHT CET Chemistry question

IUPAC name of is

(A)2-Iodo-4, 4-dimethylbutane
(B)4-Iodo-2, 2-dimethylpentaneCorrect
(C)2-Iodo-4, 4-dimethylpentane
(D)3-Iodo-4, 4-dimethylpentane

Answer: (B)

Solution

The longest chain is pentane; numbering from the tert-butyl end gives substituent locants {2,2,4} (two methyls at C2, iodo at C4) which is lower than {2,4,4} obtained

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Question ID VK-043620