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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?
Answer the following
Complete the following reaction :
`"C"_6"H"_5"N"_2^+"Cl"^-` + C2H5OH →
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?
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?
Replacement of diazo group by Cl using cuprous chloride is known as ____________.
Identify compound 'A' in the following reaction.
What is the product X obtained in the following reaction?
\[\ce{C6H5N2Cl ->[(i) HBF4, (ii) NaNO2/Cu][\Delta] X + N2 + NaBF4}\]
The reaction in which copper (I) salt is used to replace nitrogen in diazonium salt is called, ____________.
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 ____________.
Fluorobenzene (C6H5F) can be synthesized in the laboratory ______.
Which of the following reactions is used to prepare aryl fluorides from diazonium salts and fluoroboric acid?
Which from following reagents is used in Gatterman-Koch formylation of arene?
Identify the reagent involved in Sandmeyer reaction.
