1,1-dimethylethyl 4-[7-(aminocarbonyl)-5-bromo-1H-indol-3-yl]-3,6-dihydro-1(2H)-pyridinecarboxylate → tert-butyl 4-(5-bromo-7-carbamoyl-1H-indol-3-yl)piperidine-1-carboxylate

関与物質

反応手順

To a solution of 1,1-dimethylethyl 4-[7-(aminocarbonyl)-5-bromo-1H-indol-3-yl]-3,6-dihydro-1(2H)-pyridinecarboxylate (7.41 g, 17.64 mmol) in ethanol (600 mL), platinum oxide (200 mg, 5%) was added. The reaction mixture was hydrogenated under an atmosphere of H2 for 16 hours. The resulting mixture was filtered through celite and the filtrate was concentrated. The resulting residue was purified by flash column chromatography (Ethyl acetate/hexanes, 1:4 to 2:1 v/v) to give the desired product (3.6 g, 48%).

情報源と証拠