Amide
The amide has a carbonyl bonded directly to a nitrogen atom — it can be seen as a carboxylic acid where the hydroxyl was swapped for an amino group. It's the bond that forms proteins (peptide bond).
General formula
R–CO–NH₂
Naming rule
Name = main chain (including the carbonyl carbon) + suffix -amide (e.g., ethanamide). Substituents on the nitrogen take the N- prefix.
Examples
| Name | Formula |
|---|---|
| Methanamide (formamide) | HCONH₂ |
| Ethanamide (acetamide) | CH₃CONH₂ |
| N-methylethanamide | CH₃CONHCH₃ |