Asked in NUMS 2016 2016Moderate

The conversion of phenol to benzene in the presence of zinc involves:

Correct answer: B. Reduction

  • A. Oxidation
  • B. Reduction
  • C. Dehydroxylation
  • D. Dehydrogenation

Explanation

Benzene can be prepared from phenols too through their reduction. In this process, vapors of phenol are passed over heated zinc dust. Zinc dust reduces them to form benzene.

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About Phenols

Phenols contain a hydroxyl group directly bonded to an aromatic ring, making them more acidic than alcohols because the phenoxide ion is resonance-stabilised. Reactions include ionisation with bases, electrophilic substitution, bromination, nitration and oxidation, with attention to the difference between phenols and aliphatic alcohols.

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