condensation or dehydration of diacids; their structures need not be memorized, but recognize
them as cyclic anhydrides.
Figure 9.7. Naming AnhydridesKEY CONCEPT
Anhydrides are usually formed by the condensation reaction of two carboxylic acids.Acid anhydrides are synthesized, as mentioned previously, by a condensation reaction between two
carboxylic acids, with one molecule of water lost in the condensation, as shown in Figure 9.8.