Simple amines are named by adding -amine to the name of the alkyl group attached to the nitrogen.• CH3NH2 is methylamine; CH3CH2NH2 is ethylamine (systematic name ethanamine)
• CH3CH2CH2NH2 is propylamine (propan-1-amine)Secondary and tertiary amines with identical groups use di- and tri-: (CH3)2NH is dimethylamine and (CH3CH2)3N is triethylamine. If the groups are different, the smaller groups are given the prefix N- to show they are on the nitrogen: CH3CH2NHCH3 is N-methylethylamine.Position of the NH2 group. When the NH2 group could be on different carbons, use the systematic form alkan-n-amine, with a number for its position. CH3CH(NH2)CH3 is propan-2-amine.Diamines have two NH2 groups: H2N(CH2)6NH2 is hexane-1,6-diamine, a monomer used to make nylon-6,6.Amino prefix. When the molecule has a higher-priority group, such as a carboxylic acid, the NH2 group is shown by the prefix amino. H2NCH2COOH is aminoethanoic acid, and CH3CH(NH2)COOH is 2-aminopropanoic acid.Aromatic amines: C6H5NH2 is phenylamine.Worked example: name (CH3)3N. Three identical methyl groups are on the nitrogen, so it is trimethylamine, a tertiary amine.
• CH3CH2CH2NH2 is propylamine (propan-1-amine)Secondary and tertiary amines with identical groups use di- and tri-: (CH3)2NH is dimethylamine and (CH3CH2)3N is triethylamine. If the groups are different, the smaller groups are given the prefix N- to show they are on the nitrogen: CH3CH2NHCH3 is N-methylethylamine.Position of the NH2 group. When the NH2 group could be on different carbons, use the systematic form alkan-n-amine, with a number for its position. CH3CH(NH2)CH3 is propan-2-amine.Diamines have two NH2 groups: H2N(CH2)6NH2 is hexane-1,6-diamine, a monomer used to make nylon-6,6.Amino prefix. When the molecule has a higher-priority group, such as a carboxylic acid, the NH2 group is shown by the prefix amino. H2NCH2COOH is aminoethanoic acid, and CH3CH(NH2)COOH is 2-aminopropanoic acid.Aromatic amines: C6H5NH2 is phenylamine.Worked example: name (CH3)3N. Three identical methyl groups are on the nitrogen, so it is trimethylamine, a tertiary amine.