Identify product in the following reaction. This is a benzene diolinium chloride salt is react to be this region in here formation of product. See reaction, this benzene diolinium chloride salt is react to it first, CU2 BR2 introgens of HBR. Then here nitrogen in diolinium salt it is replaced by bromine. Then formation of bromobenzene, this reaction it is called as Sanmi reaction. This bromobenzene is react with magnesium introgens of dry ether. They are here formation of Grignar reagent that is benzene MgbR. This is a phenyl magnesium bromide. And this phenyl magnesium bromide that is Grignar reagent is react with water here formation of hydrocarbon. In this reaction this phenyl magnesium bromide react with water here give benzene plus Mg BRW. In this reaction product talk this reaction it is a first benzene.