反应详情

To a solution of ethyl 3-bromobutanoate (6.0 mL, 42 mmol) in N,N-dimethylformamide (20 mL) at 0° C. was added piperidine (8.0 mL, 80 mmol) and the mixture was warmed to room temperature then stirred 16 h. The reaction mixture was diluted with ethyl acetate (200 mL) and washed with a solution of brine and 2.0M aqueous sodium hydroxide (4:1 v/v). The organic phase was then dried over anhydrous sodium sulfate, filtered and concentrated to give ethyl 4-piperidin-1-ylbutanoate (6.8 g, 81% yield) as brown oil. MS (EI) for C11H21NO2: 200 (MH+).

1. washwashed with a solution of brine and 2.0M aqueous sodium hydroxide (4:1 v/v)
2. dry with materialThe organic phase was then dried over anhydrous sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated