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Question 780010
JEE Chemistry · Hard

Alcohols, Phenols and Ethers: JEE Advanced MCQ

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JEE AdvancedHardQuestion 780010

Question

Reimer-Tiemann reaction on phenol gives:
  1. A
    2-hydroxybenzaldehyde (salicylaldehyde) as major product
    Correct
  2. B
    4-hydroxybenzaldehyde only
  3. C
    Benzaldehyde
  4. D
    Phenyl ester

Correct answer

2-hydroxybenzaldehyde (salicylaldehyde) as major product

Explanation

Reimer-Tiemann reaction: phenol + CHCl₃ + NaOH → ortho-hydroxybenzaldehyde (salicylaldehyde) as major product + para isomer as minor. CHCl₃ forms :CCl₂ (dichlorocarbene) as the electrophile.

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