反应详情

温度

80 °C

To a round bottom flask was added tert-butyl {1-[4-(phenylacetyl)phenyl]cyclobutyl}carbamate (1-3) (2.7 g, 6.1 mmol), tert-butyl (6-chloro-2-formylpyridin-3-yl)carbamate (1-4) (1.6 g, 6.1 mmol), potassium carbonate (5.0 g, 6.0 mmol), and DMF (20 mL). The reaction mixture was heated to 80° C. while stirring in a hot oil bath under an atmosphere of nitrogen for 15 hours. Then the reaction mixture was warmed to 120° C. for 1 hour. The reaction mixture was permitted to cool to room temperature, added water, suspended in ethyl acetate, washed with a saturated solution of sodium bicarbonate, followed by water, brine, dried over sodium sulfate, filtered, and concentrated in vacuo. The resulting residue was purified by silica gel chromatography (5-50% EtOAc/5% DCM/Hexane) to give tert-butyl {1-[4-(6-chloro-3-phenyl-1,5-naphthyridin-2-yl)phenyl]cyclobutyl}carbamate (1-5) as an off-white solid. HRMS (M+H)+: observed=486.1954, calculated=486.1943.

1. temperatureThen the reaction mixture was warmed to 120° C. for 1 hour
2. temperatureto cool to room temperature
3. washwashed with a saturated solution of sodium bicarbonate
4. dry with materialdried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customThe resulting residue was purified by silica gel chromatography (5-50% EtOAc/5% DCM/Hexane)