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MHT CET202310 May 2023Evening ShiftChemistryAminesActual

Which of the following reagents is used in Gatterman-Koch formylation of arene?

Options

  1. ACrO ₃
  2. BCO , HCl / AlCl ₃ (anhydr.)
  3. CCrO ₂ Cl ₂, CS ₂
  4. DCl ₂ ~h v, H ₃ O ⁺

Correct answer

B. CO , HCl / AlCl ₃ (anhydr.)

Step-by-step solution

Gatterman-Koch formylation of arene involves treatment of benzene or substituted benzene under high pressure with carbon monoxide and hydrogen chloride gives benzaldehyde or substituted benzaldehyde. The reaction is carried out in presence of anhydrous aluminium chloride or cuprous chloride.

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