Dehydration of which of the following compoun | vedclass

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(B) Dehydration of alcohols follows $Saytzeff$ rule,but the formation of a specific alkene depends on the position of the hydroxyl group. For $heptan-

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$Heptan-4-ol$

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(B) Dehydration of alcohols follows $Saytzeff$ rule,but the formation of a specific alkene depends on the position of the hydroxyl group. For $heptan-3-ol$ $(CH_3CH_2CH(OH)CH_2CH_2CH_2CH_3)$,dehydration can occur by removing a hydrogen from $C-2$ or $C-4$. Removing $H$ from $C-4$ gives $hept-3-ene$ $(CH_3CH_2CH=CHCH_2CH_2CH_3)$. Removing $H$ from $C-2$ gives $hept-2-ene$ $(CH_3CH=CHCH_2CH_2CH_2CH_3)$. For $heptan-4-ol$ $(CH_3CH_2CH_2CH(OH)CH_2CH_2CH_3)$,the molecule is symmetrical. Removing $H$ from either $C-3$ or $C-5$ results in the same product,$hept-3-ene$ $(CH_3CH_2CH=CHCH_2CH_2CH_3)$. Thus,$heptan-4-ol$ yields only $hept-3-ene$ as the major product.

Dehydration of which of the following compounds gives only $hept-3-ene$?

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