Hydrochloric Acid → 5-Bromo-2-isopropoxy-4-methyl-phenylamine

Participants

Reaction Steps

To 1-Bromo-4-isopropoxy-2-methyl-5-nitro-benzene from the previous step (0.734 g, 2.68 mmol) and iron (powder, 325 mesh, 1.05 g) in 20 mL ethanol is added 1 mL of 1N aqueous HCl with cooling in an ice bath. Following this addition, the reaction is heated at reflux for 2 hrs. Then an additional 0.5 g of iron is added and the reaction is heated at reflux for an additional 2 hrs. The reaction mixture is cooled down and filtered though a pad of Celite. The filtrate is concentrated in vacuo, affording 5-Bromo-2-isopropoxy-4-methyl-phenylamine as an orange oil. The product is used for the next step without further purification.

Provenance & Evidence