Question

Which of the following will not give halo benzene by reacting with benzene diazonium chloride?

• A. $C{u}_{2}B{r}_2/HBr$
• B. $KI$
• C. $SnC{l}_2+HCl$
• D. $Cu$ powder $+HCl$

Answer 1

The correct option is C $SnC{l}_2+HCl$

Benzene diazonium chloride in the presence of $C{u}_{2}B{r}_2/HBr$ gives bromobenzene (Sandmeyer reaction).

In the presence of $KI$, it gives iodobenzene (Gattermann reaction).

In the presence of $Cu+HCl$, it gives chlorobenzene.

Both chlorobenzene and iodobenzene are halobenzenes.

Benzene diazonium chloride does not form halobenzene with $SnC{l}_2+HCl$ instead it form phenyl hydrazine.