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Identify the name reaction. Benzene + CO, HCl in presence of anhydrous AlCl3 / CuCl → benzene carbaldehyde (C6H5CHO)

1. Gattermann-Koch Reaction
2. Rosenmund Reduction
3. Stephen Reaction
4. Etard Reaction

Correct answer: Gattermann-Koch Reaction

Solution

The Gattermann-Koch Reaction is specifically designed for the formylation of aromatic compounds, where benzene reacts with carbon monoxide and hydrochloric acid in the presence of a Lewis acid catalyst, resulting in the formation of benzaldehyde.

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