Question

Which of the following reactions does not give benzal-dehyde?

Options

• Rosenmund reaction

• Etard reaction

• Gatterman-Koch reaction

• Friedel-Craft acylation reaction

Answer 1

Friedel-Craft acylation reaction

Explanation:

Friedel-Crafts acylation of benzene produces an aromatic ketone and not benzaldehyde. Benzene on Gatterman-Koch reaction gives benzaldehyde, so does toluene gives benzaldehyde Etard reaction. Rosenmund reaction also gives benzaldehyde but from benzoyl chloride.