Question

What are mixed anhydrides?

Answer 1

An acid derivative in the form of `RC(=O)O(O=C)R'`.

Explanation:

And thus a mixed anhydride is made from 2 different carboxylic acids, e.g.:

`H_3C-C(=O)Cl + HO(O=C)CH_2CH_3 + "base" rarr` `H_3C-C(=O)O(O=C)CH_2CH_2CH_3 + "base"*HCl`