Ncert Exercises & Solutions

Can Gatterman-Koch reaction be considered similar to Friedel-Crafts acylation? Discuss.

In Gatterman-Koch reaction, benzono or ite derivative is treated with CO and HCl in presence of anhydrous aluminum chloride to produce benzaldehyde.

While in Friedel-Craft acylation, acyl group is transferred to carbon of benzene and acyl benzene is obtained as a result.

This can be done by reaction of benzene with acyl chloride in the presence of anhydrous $A l C l_{3}$ .

Formyl chloride is unstable in nature. So, it can be transferred by only Gattermann-Koch reaction not by Friedel-Craft reaction.