Which of the following would undergo dehydrat | vedclass

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(B) The dehydration of alcohols follows the $E1$ mechanism,which involves the formation of a carbocation intermediate. The rate of dehydration depends

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$2$-phenyl-$2$-butanol

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(B) The dehydration of alcohols follows the $E1$ mechanism,which involves the formation of a carbocation intermediate. The rate of dehydration depends on the stability of the carbocation formed.For $2$-phenyl-$2$-butanol,the loss of the hydroxyl group results in a carbocation at the $C2$ position. This carbocation is both tertiary and benzylic,making it exceptionally stable due to resonance with the phenyl ring and inductive effects from alkyl groups.In contrast,the other options form secondary or primary carbocations,which are significantly less stable than the tertiary benzylic carbocation formed by $2$-phenyl-$2$-butanol. Therefore,$2$-phenyl-$2$-butanol undergoes dehydration most readily.

Which of the following would undergo dehydration most readily?

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