Amines can be considered to be derivatives of ammonia in which one or more hydrogen atoms are replaced by alkyl or aryl groups. The simplest amine is methylamine CH3NH2. Amines are very reactive and can accept a proton so are bases. They are also nucleophiles as they can donate a lone pair of electrons and form a dative covalent bond.Amines can be classified as primary, secondary or tertiary depending on how many alkyl groups are attached to the nitrogen.Primary amines with up to 4 carbon atoms are very soluble in water and alcohols because of the hydrogen bonding.