When (2)-bromopentane is heated with alcoholic solution of p... | Chemistry | SolveeIt | Solveeit

Today, August 18

Question

When $2$ -bromopentane is heated with alcoholic solution of potassium hydroxide, the major product obtained is

A

pent- $1$ -ene

B

pent- $2$ -ene

C

pent- $1$ -yne

D

pent- $2$ -yne

Answer

pent- $2$ -ene

Explanation

Solution

According to Saytzeff rule, in dehydrohalogenation reactions, the preferred product is that alkene which has the greater? number of 'alkyl groups attached to the doubly bonded carbon atoms. Thus, 2-bromoperttane gives pent-2-ene as the major product. .