Sandmeyer Reaction CuCl N≡NCl Cl+ n HCL A CuBr N三NBr Br t N HBr.△ 2 KI N≡NHSO I n2Organic Chemistry Organic Chemistry Xiamen Xiamen University University Sandmeyer Sandmeyer Reaction Reaction N N Cl + Cl CuC l HCl, ∆ + N 2 N N Br + Br CuBr HB r, ∆ + N 2 N N HS O 4 + KI I + N 2