Aniline to benzene organic conversion

Aniline to benzene organic conversion has two steps. First, benzenediazonium chloride should be prepared by aniline. Then benzene can be prepared by benzenediazonium chloride .

Methods of convert aniline to benzene

There are two methods to prepare benzene from aniline.

  1. Aniline to benzenediazonium, benzenediazonium to benzene
  2. Aniline to phenol, phenol to benzene

Benzene to aniline | preparation of aniline from benzene

Preparing benzene from aniline through benzenediazonium

Prepare benzenediazonium salt from aniline

Prepare benzenediazonium chloride from aniline using nitrous acid ( NaNO2 / HCl ) . To benzenediazonium chloride is prepared, temperature should be kept under 50C.

Benzenediazonium salt to benzene

Then add H3PO2 or CH3CH2OH to benzenediazonium chloride to prepare benzene.

aniline to benzene organic conversion

Physical properties of aniline, benzene

There are differences in properties of aniline and benzene. That can used to identify aniline and benzene.

  • Both aniline, benzene are liquids in room temperature.
  • Aniline is brown colour, benzene is colourless.
  • Aniline has basic characteristic, benzene does not have.
  • Aniline can make hydrogen bonds.
  • Aniline has higher boiling point than benzene.

How to identify aniline and benzene

Aniline reacts with bromine liquid and give white precipitate, 2,3,4-tribromoaniline. But benzene does not react with liquid bromine.

Prepare 2,4,6-tribromoaniline from aniline

Aniline is a primary amine which reacts with dilute acids such as HCl, H2SO4 and give salts. This salt is soluble in water.
But benzene does not react with dilute acids.

How to convert aniline to benzene through phenol

Aniline to benzene through phenol has only two steps. First, aniline reacts with nitrous acid in room temperature. It gives phenol. Then phenol is distilled with zinc powder to give benzene.

Nitrous acid - HNO2

Conversion of aniline to benzene in school chemistry examinations.

Aniline to benzene is a famous conversion.

Related articles for aniline and benzene

Benzene to aniline Aniline Benzene Organic Chemistry - Advanced Level Organic Chemistry Conversions Questions

Lewis structures

P2O5 lewis structure OH- lewis structure Ammonium ion (NH4+) lewis structure H2CO3 lewis structure