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प्रश्न
Explain the following reaction with a suitable example.
Sandmeyer reaction
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उत्तर
The Sandmeyer reaction involves replacing the diazonium group in an aryl diazonium salt with a nucleophile (such as Cl, Br, or CN) using cuprous salts as catalysts.
\[\ce{Ar - N^+_2X- ->[Cu2X2/HX] Ar - X + N2↑}\]
Example of Preparation of cyanobenzene from benzene diazonium chloride.
\[\ce{C6H5N^+_2Cl- ->[Cu2(CN)2/KCN] C6H5CN + N2}\]
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संबंधित प्रश्न
Choose the most correct option.
Which of the following compounds contains azo linkage?
The reaction in which diazonium salt is used
Draw resonance structures of aryl diazonium salts.
Write the use of aryl diazonium salts.
Explain the following reaction with a suitable example.
Gatterman reaction
Which of the following reaction of diazonium salt involves retention of diazonium group?
When a quaternary ammonium hydroxide is strongly heated, an alkene and a tertiary amine are formed as the products. This reaction is known as ____________.
The reagent used in Gatterman reaction is ____________.
Benzenediazonium chloride on reaction with 'X' gives benzene. Identify X.
Which of the following reaction does NOT involve replacement of diazonium group?
Which of the following is a Gattermann reaction?
Replacement of diazo group by Cl using cuprous chloride is known as ____________.
Formation of p-hydroxyazobenzene from benzene diazonium chloride and phenol in mild alkaline medium is a ______.
Identify compound 'A' in the following reaction.
What is the product X obtained in the following reaction?
\[\ce{C6H5N2Cl ->[(i) HBF4, (ii) NaNO2/Cu][\Delta] X + N2 + NaBF4}\]
Identify product B in the following reaction.
\[\ce{C6H5N^+_2X^- ->[HBF4] A ->[NaNO2][Cu] B}\]
In the following reaction the reagent A is,
\[\ce{Ar - N^+_2 X^- ->[A] Ar - N^+_2 BF^-_4 ->[\Delta] Ar - F + BF3 + N2 ^}\]
Benzene diazonium chloride on reaction with ethanol forms ____________.
Which from following reagents is used in Gatterman-Koch formylation of arene?
Identify the reagent involved in Sandmeyer reaction.
