Advertisements
Advertisements
Question
Illustrate the following reactions giving suitable example in each case
Coupling reaction
Advertisements
Solution
Coupling reaction: The reaction of joining two aromatic rings through the −N=N−bond is known as the coupling reaction. Arenediazonium salts, such as benzenediazonium salts, react with phenol or aromatic amines to form coloured azo compounds.
For example, the reaction of benzenediazonium chloride with phenol yields p-hydroxyazobenzene (orange dye).
APPEARS IN
RELATED QUESTIONS
Write a short note on the following:
Coupling reaction
Write equations of the following reactions:
Coupling reaction
Which of the following compound will not undergo azo coupling reaction with benzene diazonium chloride?
The product of the following reaction is:
(i)
(ii)
(iii)
(iv)
Which of the following reactions belong to electrophilic aromatic substitution?
(i) Bromination of acetanilide
(ii) Coupling reaction of aryldiazonium salts
(iii) Diazotisation of aniline
(iv) Acylation of aniline
Under what reaction conditions (acidic/basic), the coupling reaction of aryldiazonium chloride with aniline is carried out?
Benzenediazonium chloride reacts with phenol to give p-hydroxy azobenzene, an orange dye. This reaction is known as ______.
When benzene diazonium chloride reacts with phenol, it forms a dye. This reaction is called ______.
