Question

What is the product of the following reaction?

Short answer

The same mechanism does Friedal-craft acylation using the anhydride as an acid chloride, except the nature of the leaving group differs.

Friedal-craft acylation can be done usinganhydride as they have a resonance stable leaving group they can do all the reactions which can be done by acid chloride.

Step-by-step solution

Friedal-craft acylation

The same mechanism does Friedal-craft acylation using the anhydride as an acid chloride, except the nature of the leaving group differs.

Friedal-craft acylation can be done usinganhydride as they have a resonance stable leaving group they can do all the reactions which can be done by acid chloride.

Product of given reaction

The reaction of Toluene with phthalic anhydride in the presence of Lewis acid undergoes friedal craft acylation, in which the pie bond present in the toluene ring act as the nucleophile and gets attached to the electrophile carbonyl carbon of phthalic anhydride and finally of hydrolysis form the product 2-(2-methyl benzoyl) benzoic acid shown as follows: