Which one of the following reaction sequences | vedclass

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Question

(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 $A$.

List-$I$	List-$II$
$I.$ Benzenesulphonyl Chloride	$A.$ Zwitterion
$II.$ Sulphanilic acid	$B.$ Hinsberg reagent
$III.$ Alkyl Diazonium salts	$C.$ Dyes
$IV.$ Aryl Diazonium salts	$D.$ Conversion to alcohols

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

Similar Questions

Match the compounds given in List-$I$ with the items given in List-$II$.

List-$I$ List-$II$

$I.$ Benzenesulphonyl Chloride $A.$ Zwitterion

$II.$ Sulphanilic acid $B.$ Hinsberg reagent

$III.$ Alkyl Diazonium salts $C.$ Dyes

$IV.$ Aryl Diazonium salts $D.$ Conversion to alcohols

What are $X$ and $Y$ respectively in the following set of reactions?

Which one of the following methods is neither meant for the synthesis nor for separation of amines?

Which of the following statements is not true?

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