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JEE Advanced2007ChemistryAlcohols Phenols and EthersActual

Paragraph: Reimer-Tiemann reaction introduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synthesis of substituted salicylaldehydes as depicted below. Question: Which one of the following reagents is used the above reaction?

Options

  1. Aaq. NaOH + CH ₃ Cl
  2. Baq. NaOH + CH ₂ Cl ₂
  3. Caq. NaOH + CHCl ₃
  4. Daq. NaOH + CCl ₄

Correct answer

C. aq. NaOH + CHCl ₃

Step-by-step solution

aq. NaOH + CHCl ₃ Cl ₃ C - H - H ₂ O OH ⁻ Cl ₃ C ⁻ - Cl ⁻ Cl ₂ C :

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