How do you make benzoic anhydride?

How do you make benzoic anhydride? It is usually prepared by the dehydration reaction of benzoic acid, e.g. using acetic anhydride: 2 C6H5CO2H + (CH3CO)2O → (C6H5CO)2O + 2 CH3CO2H. Alternatively, sodium benzoate can be treated with benzoyl chloride. How are anhydrides formed? As you can see, an acid anhydride is a compound that has … Continue reading How do you make benzoic anhydride?