Question

Predict which compound is more reactive with $HCl$ : 2-methyl propene or propene.

• A. 2-methylpropene
• B. Propene.
• C. Both does't react
• D. None of these

Answer 1

The correct option is A 2-methylpropene

$2-$methyl propene is more reactive with $HCl$ than propene as the $+I$ effect of methyl groups makes double bond more electron rich and during electrophilic addition, a tertiary carbocation intermediate is obtained which is more stable than secondary carbocation intermediate.