Chemistry - Hydrocarbon Question with Solution | TestHub
The major product of the following reaction is
Options:
Answer:
Solution:
The given reactant is 3-methylhex-3-ene.
The addition of HI to an alkene is an electrophilic addition reaction that proceeds via the formation of a carbocation intermediate.
First, the electrophile attacks the double bond. This can result in two possible carbocations:
1. Protonation at C-4 yields a tertiary carbocation at C-3.
2. Protonation at C-3 yields a secondary carbocation at C-4.
Since a tertiary carbocation is significantly more stable than a secondary carbocation due to greater hyperconjugation and inductive effects, the reaction proceeds predominantly through the tertiary carbocation at C-3.
Finally, the nucleophile attacks this more stable tertiary carbocation, resulting in the iodine atom attaching to C-3.
The major product formed is 3-iodo-3-methylhexane.
Answer: 3 - iodo - 3 - methylhexane
