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Question

The major product formed in the following reaction is

The correct answer is

The given reaction involves an acid-catalyzed dehydration of an alcohol. Let's analyze the step-by-step mechanism to determine the major product:

  1. The alcohol undergoes protonation by the acid (H+) to form an oxonium ion.
  2. This is followed by the loss of a water molecule, resulting in the formation of a carbocation.
  3. The stability of the carbocation is crucial. In this reaction, the tertiary carbocation is more stable due to hyperconjugation and inductive effects provided by adjacent methyl groups.
  4. Finally, a hydride shift can occur to form the most stable carbocation if necessary, followed by deprotonation to form the corresponding alkene.

The major product in this reaction will be the alkene that arises from the most substituted and stable carbocation intermediate.

Therefore, the product formed from this dehydration is:

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Important Questions from Named Reactions

  1. The ozonolysis of a hydrocarbon in the presence of water produced pentanoic acid and carbonic acid. The hydrocarbon is

  2. Among the given options, the possible product(s) that can be obtained from the following reaction is/are

  3. The major product in the following reaction sequence is

  4. Formation of the ketone II from the diazoketone I involves

  5. The major product formed in the following reaction is

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