MHT CET 2022 Chemistry question

Identify the correct decreasing order of ease of dehydrohalogenation of alkyl

(A)
(B)
(C)Correct
(D)

Answer: (C)

Solution

Dehydrohalogenation (elimination of HX with alcoholic KOH) follows Saytzeff's rule: the more highly substituted (more stable) alkene is formed. A tertiary halide has the largest number of beta-hydrogens and gives the most substituted, most stable alkene (and the more stable carbocation in E1

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Question ID VK-093813