3,5-二氟-4-苯基甲氧基苯胺

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 4-benzyloxy-3,5-difluorophenylamine (3.0 g) in THF (30 mL) was added N-bromosuccinimide (2.32 g) under ice-cooling, and the mixture was stirred for 30 minutes. Conc. Hydrochloric acid (2 mL) was added to the reaction mixture to precipitate a solid. The solid was collected by filtration and dried. The dried solid was dissolved in water, and the solution was added with saturated aqueous sodium bicarbonate, and then extracted with ethyl acetate. The extract was dried over sodium sulfate and concentrated to give 4-benzyloxy-2-bromo-3,5-difluorophenylamine (3.33 g). cooling to precipitate a solid The solid was collected by filtration dried The dried solid was dissolved in water the solution was added with saturated aqueous sodium bicarbonate extracted with ethyl acetate The extract was dried over sodium sulfate concentrated