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Question: According to IUPAC, what is the systematic name of the following hydrocarbon? ...

According to IUPAC, what is the systematic name of the following hydrocarbon?

A

2-Ethyl-3-isopropylhexane

B

3-Isopropyl-5-methylheptane

C

3-Ethyl-2,5-dimethylheptane

D

5-Ethyl-3,6-dimethylheptane

Answer

3,5-dimethylheptane (However, this is not among the options, indicating a flaw in the question)

Explanation

Solution

To determine the IUPAC name of the given hydrocarbon, we follow these steps:

  1. Identify the longest continuous carbon chain:
    The given skeletal structure corresponds to a hydrocarbon with 7 carbons in the longest chain (Heptane).

  2. Number the carbon atoms in the longest chain:
    Numbering from either end gives the same locants for the substituents.

  3. Identify and name the substituents:
    There are two methyl groups at positions 3 and 5.

  4. Combine the names:
    The IUPAC name is 3,5-dimethylheptane.
    However, this name is not among the options, and the carbon count in the given structure (9 carbons) differs from that of the options (11 carbons), indicating a flaw in the question.