NEET 2021 · ChemistryPrevious Year Question

Choose the correct skeletal structure for 2,6-dimethyldec-4-ene.

Answer: (C) (C). \textbf{Answer:} (c) \textbf{Solution:} 2,6-Dimethyldec-4-ene has a 10-carbon parent chain (dec) with a double bond starting at C4 and methyl substituents at C2 and C6: $CH X_{3} - CH (CH X_{3}) - CH X_{2} - CH = CH - CH (CH X_{3}) - CH X_{2} - CH X_{2} - CH X_{2} - CH X_{3}$ Only option (C) matches this connectivity, with the C4=C5 double bond and methyl branches at C2 and C6.

A.(A)
B.(B)
C.(C)✓
D.(D)

Correct Answer

Solution & Explanation

\textbf{Answer:} (c) \textbf{Solution:} 2,6-Dimethyldec-4-ene has a 10-carbon parent chain (dec) with a double bond starting at C4 and methyl substituents at C2 and C6: $CH X_{3} - CH (CH X_{3}) - CH X_{2} - CH = CH - CH (CH X_{3}) - CH X_{2} - CH X_{2} - CH X_{2} - CH X_{3}$ Only option (C) matches this connectivity, with the C4=C5 double bond and methyl branches at C2 and C6.

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