Question

Benzene gets converted to benzaldehyde by Gatterman-Koch's reaction. The appropriate reagent for the conversion is:

Options

• Chlorine

• Chromyl chloride

• Chromic oxide

• Carbon monoxide and hydrogen chloride

Answer 1

Carbon monoxide and hydrogen chloride

Explanation:

Gatterman-Koch is a kind of Friedel craft acylation done in presence of CO and HCl using AlCl₃ as a catalyst and is used to produce aromatic aldehydes.

$$\mathrm{C}{\phantom{A}}_6\mathrm{H}{\phantom{A}}_6+\mathrm{CO}+\mathrm{HCl}⟶\mathrm{C}{\phantom{A}}_6\mathrm{H}{\phantom{A}}_5\mathrm{CHO}$$