Aromatic primary amine when treated with cold | vedclass

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(D) When an aromatic primary amine (like aniline) is treated with nitrous acid $(HNO_2)$,which is generated in situ by the reaction of $NaNO_2$ and $H

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Diazonium salt

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(D) When an aromatic primary amine (like aniline) is treated with nitrous acid $(HNO_2)$,which is generated in situ by the reaction of $NaNO_2$ and $HCl$ at a low temperature of $0-5^{\circ}C$ $(273-278 \ K)$,it undergoes a diazotization reaction. This reaction results in the formation of an aromatic diazonium salt,such as benzene diazonium chloride. The reaction is: $C_6H_5NH_2 + NaNO_2 + 2HCl \xrightarrow{0-5^{\circ}C} C_6H_5N_2^+Cl^- + NaCl + 2H_2O$.

Aromatic primary amine when treated with cold $HNO_2$ gives

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