Question

The reaction ${CH}_{3}CH={CH}_2+HBr\underrightarrow{peroxide}{CH}_3{CH}_2{CH}_{2}Br$ can be explained by

• A. Carbocation formation
• B. Free-radical mechanism
• C. Carboanion formation
• D. None of these

Answer 1

The correct option is B Free-radical mechanism

${CH}_{3}CH={CH}_2+HBr\underrightarrow{peroxide}{CH}_3{CH}_2{CH}_{2}B{r}^{.}$
$R-O-O-R⟶R-O^{.}+O^{.}-R$
$R-O+H-Br⟶R-O-H+B{r}^{.}$
${CH}_3-CH-{CH}_{2}Br+HBr⟶{CH}_3-{CH}_2-{CH}_{2}Br+B{r}^{.}$
Reaction can be explained by free radical mechanism