MHT CET · Chemistry · Amines
Which of the following reagents is used in Gatterman-Koch formylation of arene?
- A \(\mathrm{CrO}_3\)
- B \(\mathrm{CO}, \mathrm{HCl} / \mathrm{AlCl}_3\) (anhydr.)
- C \(\mathrm{CrO}_2 \mathrm{Cl}_2, \mathrm{CS}_2\)
- D \(\mathrm{Cl}_2 \mathrm{~h} v, \mathrm{H}_3 \mathrm{O}^{+}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{CO}, \mathrm{HCl} / \mathrm{AlCl}_3\) (anhydr.)
Step-by-step Solution
Detailed explanation
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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