Question

The reaction of $1$-hexene with $HBr$ in presence of peroxide yields $1$-bromo cyclohexane. The mechanism of the reaction involves :

• A. attack on alkene by a $B{r}^{+}$ ion
• B. attack on alkene by a bromide ion
• C. attack on alkene by a bromine free radical
• D. None of these

Answer 1

The correct option is C attack on alkene by a bromine free radical

The reaction of $1$-Hexene with $HBr$ in presence of peroxide yields $1$-bromo cyclohexane.

The mechanism of the reaction involves an attack on alkene by a bromine atom. The reaction proceeds through a free radical mechanism.

In the presence of peroxide, bromine free radical is generated. This bromine free radical then attacks alkene.

Hence the correct option is C.