For the reaction: CH_3CH_2CH(CH_3)_2 (precursor alcohol) [475 ,K] H_2SO_4 X ( mixture: CH_3-CH=CH-CH_3 and CH_2=CH-CH_2-CH_3 )

JEE Main Chemistry question

For the reaction:

CH_3CH_2CH(CH_3)_2 \ (precursor alcohol) X \ (mixture: -CH=CH- and =CH--

(A)CH_3-CH=CH-CH_3 predominatesCorrect
(B)CH_2=CH-CH_2-CH_3 predominates
(C)Both are formed in equal amounts
(D)The product ratio is dependent on the halogen X

Answer: (A)

Solution

Acid-catalysed dehydration of a secondary alcohol like 2-butanol proceeds via a carbocation intermediate and follows Saytzeff's rule: the more substituted, more stable alkene is the major

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-148222