Sandmeyer Reaction

Consider the following conversion : Amongst the following, how many methods can be used in any one of steps involved in the mentioned conversion? i. Hoffmann bromamide degradation ii. Gabriel phthalimide synthesis iii. Sandmeyer reaction iv. Clemmensen reduction v. Mendius reduction

Consider the following conversion : Amongst the following, how many methods can be used in any one of steps involved in the mentioned conversion? i. Hoffmann bromamide degradation ii. Gabriel phthalimide synthesis iii. Sandmeyer reaction iv. Clemmensen reduction v. Mendius reduction

Explain the following reaction : Sandmeyers reaction.

Sandmeyer's reaction