Question

Benzaldehyde is formed when benzene is treated with $CO$ and $HCl$ in presence of $AlC{l}_3$. Name of the reaction is:

• A. Gattermann–Koch reaction
• B. Friedel craft reaction
• C. Rosenmund reaction
• D. Stephen reaction

Answer 1

The correct option is A Gattermann–Koch reaction

The Gattermann–Koch reaction is named after the German chemists Julius Arnold Koch and Ludwig Gattermann. In a Gattermann–Koch reaction refers to a Friedel–Crafts acylation reaction in which a Friedel–Crafts catalyst, hydrochloric acid, and carbon monoxide are used to produce benzaldehyde from benzene. Hence correct opton is (a).