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NEET 2022 · ChemistryPrevious Year Question

The correct IUPAC name of the following compound is:

Answer: (A) 1-bromo-5-chloro-4-methylhexan-3-ol. \textbf{Answer:} (a) 1-bromo-5-chloro-4-methylhexan-3-ol \textbf{Solution:} The principal chain is 6 carbons (hexane), and the is the principal characteristic group, so it must receive the lowest locant.

  1. A.1-bromo-5-chloro-4-methylhexan-3-ol✓
  2. B.6-bromo-2-chloro-4-methylhexan-4-ol
  3. C.1-bromo-4-chloro-5-chlorohexan-3-ol
  4. D.6-bromo-4-chloro-4-chlorohexan-4-ol

Correct Answer

(A) 1-bromo-5-chloro-4-methylhexan-3-ol

Solution & Explanation

\textbf{Answer:} (a) 1-bromo-5-chloro-4-methylhexan-3-ol \textbf{Solution:} The principal chain is 6 carbons (hexane), and the is the principal characteristic group, so it must receive the lowest locant. Numbering from the Br end: C1 , C2 , C3 (CHOH), C4 (CH-CH3), C5 (CHCl), C6 (CH3). Substituents: 1-bromo, 5-chloro, 4-methyl; suffix -3-ol. Name = 1-bromo-5-chloro-4-methylhexan-3-ol.

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