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JAMB Chemistry 2014 Question 40

Question 40

Introduction to Organic Chemistry

The IUPAC nomenclature of the compound above is

Diagram for this question
  1. A.2-bromo-3-chlorobutanol.
  2. B.3-bromo-2-chlorobutanol.
  3. C.3-chloro-2-bromobutanol.
  4. D.2-chloro-3-bromobutanol.
Show the answer and explanation

Answer: B (3-bromo-2-chlorobutanol.)

Explanation

Number from the carbon with –OH (C1): Cl is on C2 and Br on C3. Prefixes go in alphabetical order, so the name is 3-bromo-2-chlorobutanol.