Which one of the following reaction sequences | vedclass

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(A) The formation of an azo dye involves the coupling reaction of a diazonium salt with an electron-rich aromatic compound like $\beta$-naphthol in an

Vedclass · Accepted Answer

Nitrobenzene $\xrightarrow[(ii) NaNO_2/HCl]{(i) Sn/HCl}$ $\xrightarrow[(iii) \beta-	ext{naphthol}, NaOH]{}$

Vedclass · Answer

(A) The formation of an azo dye involves the coupling reaction of a diazonium salt with an electron-rich aromatic compound like $\beta$-naphthol in an alkaline medium.$1$. Nitrobenzene $(C_6H_5NO_2)$ is reduced to aniline $(C_6H_5NH_2)$ using $Sn/HCl$.$2$. Aniline reacts with $NaNO_2/HCl$ at $0-5^{\circ}C$ to form benzenediazonium chloride $(C_6H_5N_2^+Cl^-)$.$3$. Benzenediazonium chloride undergoes a coupling reaction with $\beta$-naphthol in the presence of $NaOH$ to form an orange-red azo dye.Therefore,the correct sequence is given in option $A$.

Which one of the following reaction sequences will give an azo dye?

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