反应详情

240 mg (1.2 mmol) of 4-(4-oxo-piperidin-1-yl)-benzonitrile (reference example 116) was dissolved in 5 ml of methanol, 23 mg (0.6 mmol) of NaBH4 was added and stirred 3 h at room temperature. A few drops of water were added, methanol evaporated then 20 ml of water were added and extracted with DCM (3×), dried with Na2SO4, filtered and evaporated to give 230 mg (95% yield) of the title compound. 1H NMR (CDCl3): d 7.47 (d, 2H), 6.85 (d, 2H), 3.93 (bs, H), 3.70 (m, 2H), 3.11 (m, 2H), 1.95 (m, 2H), 1.62 (m, 2H). MS (ion spray) m/z 202 (M+H)+.

1. custommethanol evaporated
2. addition20 ml of water were added
3. extractionextracted with DCM (3×)
4. dry with materialdried with Na2SO4
5. filtrationfiltered
6. customevaporated