Which of the following reactions does NOT inv | vedclass

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(B) The reaction of benzene diazonium chloride with aniline is a coupling reaction,not a replacement reaction. In this reaction,the diazonium group $(

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Reaction with aniline

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(B) The reaction of benzene diazonium chloride with aniline is a coupling reaction,not a replacement reaction. In this reaction,the diazonium group $(-N_2^+Cl^-)$ is retained in the product,$p$-aminoazobenzene,where the nitrogen atoms form an azo linkage $(-N=N-)$ between the two benzene rings.In contrast,the other options involve the replacement of the diazonium group:$1$. Reaction with $KI$ replaces the $-N_2^+Cl^-$ group with $-I$.$2$. Reaction with $CuCl/HCl$ (Sandmeyer reaction) replaces the $-N_2^+Cl^-$ group with $-Cl$.$3$. Reaction with $H_3PO_2$ (hypophosphorus acid) replaces the $-N_2^+Cl^-$ group with $-H$ (reduction to benzene).

Which of the following reactions does $NOT$ involve the replacement of the diazonium group?

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