反应详情

HATU (91 mg, 0.239 mmol) was added to a solution of 3-methyl-4-[2-(4-oxo-piperidine-1-sulfonyl)-ethyl]-benzoic acid (50 mg, 0.154 mmol), (2-allyloxy-ethyl)-methyl-amine (36 mg, 0.312 mmol) and diisopropylethylamine (0.065 ml, 0.384 mmol) in DMF (0.5 ml), and the mixture was stirred at room temperature overnight. Water (12 ml) and 1 N hydrochloric acid (1.5 ml) were added to the reaction solution, followed by extraction with ethyl acetate. The organic layer was sequentially washed with 0.1 N hydrochloric acid, water and saturated brine, and then dried over anhydrous sodium sulfate and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give N-(2-allyloxy-ethyl)-3,N-dimethyl-4-[2-(4-oxo-piperidine-1-sulfonyl)-ethyl]-benzamide (76 mg, 100%).

1. extractionfollowed by extraction with ethyl acetate
2. washThe organic layer was sequentially washed with 0.1 N hydrochloric acid, water and saturated brine
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe resulting residue was purified by silica gel column chromatography (hexane-ethyl acetate)