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प्रश्न
Explain the following reaction with a suitable example.
Sandmeyer reaction
उत्तर
In this reaction, arene diazonium salts undergo a nucleophilic substitution reaction. The reaction involves displacement of the diazo group by – Cl/– Br/ –CN atom. The reaction can be represented as,
\[\ce{Ar - N^+_2X- ->[CuX/HX] Ar - X + N2 (X = -Cl, -Br)}\]
\[\ce{Ar - N^+_2X- ->[CuCN/KCN] Ar - CN + N2}\]
e.g. Preparation of cyanobenzene from benzene diazonium chloride.
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संबंधित प्रश्न
Choose the most correct option.
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Answer the following
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\[\ce{C6H5N2Cl ->[(i) HBF4, (ii) NaNO2/Cu][\Delta] X + N2 + NaBF4}\]
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\[\ce{Ar - N^+_2 X^- ->[A] Ar - N^+_2 BF^-_4 ->[\Delta] Ar - F + BF3 + N2 ^}\]
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