反应详情

4-Hydroxy-5-methylpyridin-2(1H)-one (554 mg, 4.43 mmol), benzyl 4-(methylsulfonyloxy)piperidine-1-carboxylate (2081 mg, 6.64 mmol), and potassium carbonate (1224 mg, 8.86 mmol) were stirred in DMF (12 mL) at 100° C. under nitrogen for 14 hours. 100 mL water and 100 mL EtOAc was added and then washed the EtOAc layer with 2×100 mL additional water. The organic layer was dried with Na2SO4, filtered, and concentrated to give 1454 mg of a brown oil. The oil was purified by flash chromatography (0-5% MeOH/CH2Cl2) to give product (280 mg, 0.82 mmol, 18%) as a pale tan foam. MS (ESI) 343.4 (M+1).

1. washwashed the EtOAc layer with 2×100 mL additional water
2. dry with materialThe organic layer was dried with Na2SO4
3. filtrationfiltered
4. concentrationconcentrated