which of the following alkenes should be used to synthesize `3`-bromohexane by reaction with `HBr`?

Options

A. Hex-1-ene
B. Hex-2-ene
C. Hex-3-ene
D. Both (2) and (3)

Answer

C

Explanation

It gives only one product while hex-2ene gives a mixture of products.
`C-C-C=C-C-Coverset(HBr)(rarr)C-C-underset(Br)underset(|)(C )-underset(H)underset(|)(C )-C-C`
`C-C=C-C-C-Coverset(HBr)(rarr)`
`C-underset(Br)underset(|)(C )-underset(H)underset(|)(C )-C-C-C+C-underset(H)underset(|)(C )-underset(Br)underset(|)(C )-C-C-C`
`"Hex-1-ene gives 2-Bromohexane" `
`C=C-C-C-C-Coverset(HBr)(rarr)C-underset(Br)underset(|)(C )-C-C-C-C`