Classes of Amides 0 CH3 H H-C-N CH3-C-N CHCH2-C-N CH: CH dimethylformamide N-methylacetamide propionamide 3°amide 2°amide 1°amide 1 amide has one C-N bond (two N-H). 2 amide or N-substituted amide has two C-N bonds (one N-H). 3 amide or N,N-disubstituted amide has three C-N bonds (no N-H). Chapter 21 8 Chapter 21 8 Classes of Amides ▪ 1 amide has one C—N bond (two N—H). ▪ 2 amide or N-substituted amide has two C—N bonds (one N—H). ▪ 3 amide or N,N-disubstituted amide has three C—N bonds (no N—H). 3º amide 2º amide 1º amide