Amines are organic compounds derived from ammonia ($NH_3$) by replacing one or more hydrogen atoms with alkyl or aryl groups. They play a crucial role in biological systems and industrial applications.
Amides: Organic compounds derived from carboxylic acids where the hydroxyl group is replaced by an amino group. Amides are generally less basic than amines.
Alkylation: A chemical reaction in which an alkyl group is transferred to another molecule. Amines can undergo alkylation to form higher-order amines.
Aniline: An aromatic amine where the amino group is attached directly to a benzene ring. Aniline is used in the manufacture of dyes and pharmaceuticals.