反应详情

To a solution of 3-iodo-4-methoxyaniline (180 mg, 0723 mmol) in DCM (5 mL) 1-methyl-4-piperidone (0.116 mL, 106 mg, 0.940 mmol), TFA (0.290 mL, 429 mg, 3.760 mmol) and tetramethylammonium triacetoxyborohydride (285 mg, 1.084 mmol) were added in sequence. The reaction is completed in 30 min. The reaction mixture was diluted with DCM, washed with saturated solution of sodium hydrogen carbonate (3×5 mL), brine (3×5 mL), dried over sodium sulfate and the solvent was removed under vacuum. The solid crude so obtained was purified by flash chromatography (EtOAc/TEA 99/1) to afford a beige solid that was crystallized from diethylether to afford the title compound as a whitish solid (197 mg, 79%).

1. washwashed with saturated solution of sodium hydrogen carbonate (3×5 mL), brine (3×5 mL)
2. dry with materialdried over sodium sulfate
3. customthe solvent was removed under vacuum
4. customThe solid crude so obtained
5. customwas purified by flash chromatography (EtOAc/TEA 99/1)
6. customto afford a beige solid
7. customthat was crystallized from diethylether