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Question
Which of the following reaction of diazonium salt involves retention of diazonium group?
Options
Reaction with phosphinic acid
Reaction with dilute sulphuric acid
Reaction with HCI and Cu powder
Reaction with phenol
MCQ
Solution
Reaction with phenol
Explanation:
The diazonium group is retained in the reaction with phenol of diazonium salt.
When benzene diazonium chloride interacts with phenol, the para position of the phenol molecule is associated with the diazonium salt, forming p- hydroxyazobenzene.
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Reactions of Arene Diazonium Salts
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