Question

Hydrogenation of benzyl chloride in the presence of $Pd-BaS{O}_4$ is called -

• A. Rosenmund reaction
• B. Aldol condensation
• C. Koch reaction
• D. Gattermann reaction

Answer 1

The correct option is A Rosenmund reaction

Rosenmund reduction is a reaction where acid chlorides are converted into aldehydes by employing hydrogen gas over palladium poisoned by barium sulfate.

When Benzoyl chloride reacts with hydrogen in presence of palladium catalyst and barium sulphate, benzaldehyde is formed. this is known as Rosenmund's reaction. It is a reduction reaction where hydrogen is added to benzoyl chloride in presence of a catalyst.