During dehydration of alcohols to alkenes by heating with conc. H_2SO_4 the initiation step is

JEE Main 2003 Chemistry question

During dehydration of alcohols to alkenes by heating with conc. the initiation step is

(1)formation of carbocation
(2)elimination of water
(3)formation of an ester
(4)protonation of alcohol moleculeCorrect

Answer: (4)

Solution

Mechanism: (i) the alcohol oxygen is protonated to give an oxonium ion (initiation); (ii) water leaves to give a carbocation; (iii) a β-proton is lost to give the alkene. Hence the

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-038206