Question

The major product obtained by the addition reaction of $HBr$ to 4-methylpent-1-ene in the presence of peroxide is:

• A. 1-bromo-4-methylpentane
• B. 4-bromo-2-methylpentane
• C. 2-bromo-4-methylpentane
• D. 3-bromo-2-methylpentane

Answer 1

The correct option is A 1-bromo-4-methylpentane

In the presence of peroxide, addition of HBr to unsymmetrical alkenes takes place contrary to Markovnikov’s rule.