Amines Mind Map

Amines are derivatives of ammonia classified as primary, secondary, or tertiary according to the number of alkyl or aryl groups directly attached to nitrogen.

For classification questions, look only at the atoms directly bonded to nitrogen before deciding 1°, 2°, or 3°.

Amines can be prepared by reducing nitrogen-containing functional groups or by named reactions that introduce an amino group under controlled conditions.

Track carbon count before writing the product; many preparation questions are designed around chain length change.

Basicity of amines is the tendency of nitrogen to donate its lone pair to a proton, forming a substituted ammonium ion.

For aromatic amines, mention resonance delocalisation of the nitrogen lone pair; for aliphatic amines, discuss +I effect along with solvation when needed.

Amines undergo reactions based on the nucleophilic lone pair of nitrogen, including acylation, alkylation, carbylamine reaction, Hinsberg test, and reaction with nitrous acid.

For test-based questions, first identify the class of amine, then apply the correct reagent observation or product.

Diazonium salts are compounds containing the Ar-N2+ X- group, commonly formed from primary aromatic amines using nitrous acid at low temperature.

Always write 273-278 K for diazotisation of aniline and identify whether the next step is replacement or coupling.