JEE Main Chemistry question

Maximum dehydration takes place in that of (four cyclohexanone/cyclohexanol-type structures with an OH at different positions relative to the ring ketone)

(A)The structure whose dehydration gives a cross-conjugated dienone (OH beta to ring C=O, same side)Correct
(B)The structure whose dehydration gives a non-conjugated product
(C)Plain cyclohexanol (no adjacent ketone)
(D)A structure with an allylic (not beta-keto) OH

Answer: (A)

Solution

Dehydration ease correlates with the stability of the resulting alkene; when the is positioned so that dehydration produces a new C=C conjugated with an existing ring C=O, the

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Question ID VK-148658