反应详情

温度

0 °C

1-Benzyl-4-piperidinone (946 mg, 5 mmol) was added to 5 mL anhydrous THF and cooled to 0° C. under nitrogen. 10 mL of 2,5-dimethylphenylmagnesium bromide (0.5 M solution in THF) was added drop-wise. The reaction was stirred at 0° C. for 10 minutes, then allowed to warm to room temperature and stirred for 1 h. The reaction was concentrated, and brought back up in methanol/H2O/acetic acid (1:1:0.5). The solution was filtered and purified by reverse-phase HPLC (2-99% CH3CN/0.085% TFA) to yield 1-benzyl-4-(2,5-dimethyl-phenyl)-piperidin-4-ol 3a. MS (ESI) m/z (M+H+) 296.2.

1. temperatureto warm to room temperature
2. stirringstirred for 1 h
3. concentrationThe reaction was concentrated
4. filtrationThe solution was filtered
5. custompurified by reverse-phase HPLC (2-99% CH3CN/0.085% TFA)