反应详情

温度

120 °C

To a microwave vial was added (R)-1-(4-(3-(1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-3-oxo-1-o-tolylpropyl)phenyl)piperidine-4-carboxylic acid (100 mg, 218 μmol), hydroxylamine hydrochloride (45.5 mg, 654 μmol) and sodium hydrogencarbonate (91.6 mg, 1.09 mmol) in ethanol (2 mL) and water (0.2 mL). The vial was capped and heated at 120° C. for 15 min, then hydroxylamine hydrochloride (45.5 mg, 654 μmol) and sodium hydrogencarbonate (91.6 mg, 1.09 mmol) were added again. The vial was capped and heated at 120° C. for 10 min, then the reaction mixture was evaporated. The residue was washed with dichloromethane, then suspended in dichloromethane/methanol 9:1 and filtered. The filtrate was concentrated and purified by chromatography (SiO2; gradient dichloromethane/methanol 19:1 to dichloro-methane/methanol 4:1) to afford the title compound (66 mg, 61%). Light brown solid, MS (ESI−): m/z=472.4 (M−H)−.

1. customThe vial was capped
2. customThe vial was capped
3. temperatureheated at 120° C. for 10 min
4. customthe reaction mixture was evaporated
5. washThe residue was washed with dichloromethane
6. filtrationfiltered
7. concentrationThe filtrate was concentrated
8. custompurified by chromatography (SiO2; gradient dichloromethane/methanol 19:1 to dichloro-methane/methanol 4:1)