Conversion of an aryl diazonium salt into an aryl chloride or bromide using a copper(I) halide is called which reaction?

Explanation

The Sandmeyer reaction replaces an aryl diazonium group with chlorine or bromine using a copper(I) halide. The related diazonium Gattermann procedure uses copper powder and the corresponding acid. Finkelstein is halogen exchange, while the Balz–Schiemann reaction is used for aryl fluorides.