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JEE Main · 2007 · 29 Apr 2007 · Offline · General Organic Chemistry

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The IUPAC name of

is
  1. (A)1, 1-diethyl-2,2-dimethylpentane
  2. (B)4, 4-dimethyl-5, 5-diethylpentane
  3. (C)5, 5-diethyl-4, 4-diemthylpentane
  4. (D)3-ethyl-4, 4-dimethylheptane✓ Correct

Answer: (D)

Solution

Picking the longest carbon chain gives a seven-carbon heptane parent. Numbering so as to keep the locants lowest, the substituents are two methyl groups on the fourth carbon and an ethyl group on the third. The systematic name is therefore 3-ethyl-4,4-dimethylheptane.

JEE Main · 2007 · 29 Apr 2007 · Offline · Single correct option

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