Question Detail

CHM 102 Practice Questions Objective Question

Question

2-Methyl-2-butene reacts with HBr in the presence of peroxide to give
Options
A A primary alkyl bromide
B A secondary alkyl bromide
Correct Answer
C A tertiary alkyl bromide
D A vicinal dibromide
Correct Answer

Option B is the correct answer.

Detailed Explanation

2-Methyl-2-butene (CH3-C(CH3)=CH-CH3) reacts with HBr in the presence of peroxide to give 2-bromo-3-methylbutane (or 3-bromo-2-methylbutane), which is a secondary alkyl bromide (the bromine is attached to a secondary carbon).

Hint

What type of alkyl bromide is formed in this anti-Markovnikov addition?

Question Info