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MHT CET Medical202621 April 2026Morning ShiftChemistryAlcohols Phenols and EthersActual

Which of the following reactions is used to prepare salicylaldehyde from phenol ?

Options

  1. AKolbe's reaction
  2. BReimer-Tiemann reaction
  3. CWilliamson synthesis
  4. DEsterification

Correct answer

B. Reimer-Tiemann reaction

Step-by-step solution

Reimer-Tiemann reaction is used to prepare salicylaldehyde from phenol. In this reaction, phenol is treated with chloroform ( CHCl₃ ) in the presence of aqueous sodium hydroxide ( NaOH ) at 340 K , followed by hydrolysis, to yield salicylaldehyde (2-hydroxybenzaldehyde). Kolbe's reaction is used to prepare salicylic acid. Williamson synthesis is used for the preparation of ethers. Esterification is used for the preparation of esters. Answer: Reimer-Tiemann reaction

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