Sandmeyer Reaction
Sandmeyer reaction converts:
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About This Question
- Subject
- chemistry
- Chapter
- organic compounds containing halogens
- Topic
- sandmeyer reaction
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Diazonium salts to aryl halides
The Sandmeyer Reaction is a versatile route for synthesizing aryl halides from primary aromatic amines.
- Diazotization: Ar−NH2+NaNO2+2HCl0−5∘CAr−N2+Cl−+NaCl+2H2O
- Sandmeyer Step: The benzene diazonium chloride is treated with a Copper(I) salt solution.
- Ar−N2+Cl−CuCl/HClAr−Cl+N2
- Ar−N2+Cl−CuBr/HBrAr−Br+N2
- Note: Ar−I is prepared simply by shaking with KI, without the need for a Copper(I) salt.
This medium difficulty chemistry question is from the chapter organic compounds containing halogens, covering the topic of sandmeyer reaction. It appeared in the 2025 exam.
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