Loss of water from two molecules of a carboxylic acid forms an acid anhydride. Acid an­hyd...

Loss of water from two molecules of a carboxylic acid forms an acid anhydride. Acid an­hydrides are also carboxylic acid derivatives—the OH group of the carboxylic acid has been replaced with a carboxylate group. Thus, the carboxylate group is the leaving group of an acid anhydride.

What is the product of the reaction of acid anhydride with

a. an alcohol?

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b. an amine?