The reaction is named as _________.

• In Sandmeyer reaction the diazonium groups get replaced by halide ions in the benzene ring. This is a typical nucleophilic substitution reaction which introduces new halide groups to the benzene ring in the presence of copper powder (Cu(I) ions).

All other reaction (ii) Gatterman reaction(iii) Claisen reaction(iv) Carbylamine reaction are other type of reactions .