Question

What is 'A' and 'B' respectively in the following reaction?

• A. $A=C{u}_{2}C{l}_2,B=N_2$
• B. $A=C{u}_2{I}_2,B=I_2$
• C. $A=I_2,B=N_2$
• D. $A=KI,B=N_2$

Answer 1

The correct option is D $A=KI,B=N_2$

When freshly prepared diazonium​ salt of primary aromatic amine is treated with $C{u}_2{X}_2(X=Cl,Br)$, aryl amine is formed. This reaction is known as Sandmeyer reaction. But, replacement of diazonium group with iodine doesn’t require cuprous halide, it can be done with KI.


Hence, the correct answer is option (d).