Question

The Gattermann-Koch reaction is used in the industrial preparation of benzaldehyde. The electrophile involved in this reaction is

• A. CO+
• B. HCl + CO$_2$ + anhydrous AlCl$_3$
• C. HCO+
• D. CO + anhydrous AlCl$_3$

Answer 1

Answer: (A)

CO+

Answer 2

The Gattermann-Koch reaction involves the formation of benzaldehyde from benzene using CO and HCl in the presence of anhydrous AlCl3 as a catalyst. The electrophile generated in the reaction is CO+, which reacts with benzene.