Fun. group formula
Definition :
The derivatives of carboxylic acids obtained on condensation reaction of two monocarboxylic acids with elimation of water molecule called acid anhydrides.
Nomenclature :
1. Common name system :
I) Find the common name of carboxylic acid and replace acid term with anhydride.
The resultant name is common name.
2.IUPAC system :
I) Find the IUPAC name of carboxylic acid [alkanoic acid].
II) Replace acid term with anhydride it becomes alkanoic anhydride.
| SL. No | Formula | Common name | IUPAC name | ||
| 1 |  |
Acetic anhydride | ethanoic anhydride | ||
| 2 |  |
Propionic anhydride | propanoic anhydride | ||
| 3 |  |
n-Butyric anhydride | butanoic anhydride | ||
| 4 |  |
Benzric anhydride | benzoic anhydride |