Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of sodium nitrite in presence of hydrochloric acid The compound so formed is converted into a tetrafluoroborate which is subsequently heated The final product is .

Aniline is treated with bromine water and the resulting product is treated with an aqueous soluition of sodium nitrite in presence of dilute HCl. The compound so formed is converted into tetrafluoroborate which is subsequently heated dry. The final product is

Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of sodium nitrite in presence of dilute hydrochloric acid. The compound so formed is converted into. The compound so formed is converted into a tetrafluoroborate which is subsequently heated. The final product is

Salicylic acid is treated with excess bromine water. The product formed is

Salicylic acid is treated with excess of bromine water .The product formed is