Acid anhydrides can be prepared in three ways: by reacting an acid halide with a carboxylic acid, by reacting an acid halide with the salt of a carboxylic acid, or from an acid chloride. The document discusses the preparation of acid anhydrides through various chemical reactions and provides a brief overview of the mechanisms involved.

1. Preparation of Acid
Anhydride
By Quratulain
18441506-117
Presented to
Dr. Hummera Rafique

3. Preparation of Acid Anhydride
• By reaction of Acid Halide with a Carboxylic Acid
• By reaction of Acid Halide with salt of a Carboxylic Acid
• From acid chloride

5. Mechanism

7. THE END
THANKS