Nitrogen, Sulphur & Phosphorus Organic Compounds

Question 1

What are the levels to amine classification?

Answer 1

• primary amine: one alkyl/aryl group bonded to nitrogen and 2 hydrogens
• secondary amine: two alkyl/aryl groups bonded to nitrogen and 1 hydrogen
• tertiary amine: three alkyl/aryl groups bonded to nitrogen
• quaternary amine: four alkyl/aryl groups bonded to nitrogen (charged +1)

Question 2

What factors affect basicity of amines?

Answer 2

Increasing the number of alkyl group, the basicity of the amine increases
(secondary > primary > ammonia).
However, tertiary amine less basic because of the poor solubility of the protonated amine that would be formed