Question Detail
Question
The compound CH₃CH₂CH=CH₂ reacts with HBr to give primarily:
Correct Answer
Option B is the correct answer.
Detailed Explanation
According to Markovnikov's rule, the hydrogen adds to the less substituted carbon of the double bond. For but-1-ene, the H adds to the terminal carbon, Br adds to the internal carbon, yielding 2-bromobutane.
Hint
The major product is the one where the halogen is on the more substituted carbon.