反应详情

温度

80 °C

A pressure vial was charged with benzyl {7-bromo-2-[({4-[(3S,5R)-3-[(tert-butoxycarbonyl)amino]-5-(trifluoromethyl)piperidin-1-yl]pyridin-3-yl}amino)carbonyl]quinolin-3-yl}carbamate (0.032 g, 0.043 mmol), K3PO4 (0.0181 g, 0.0852 mmol), 1,4-dioxane (0.55 mL), water (0.092 mL) and 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2H-pyran (0.013 g, 0.063 mmol). The mixture was deoxygenated with nitrogen for 10 min. Dicyclohexyl(2′,4′,6′-triisopropylbiphenyl-2-yl)phosphine-(2′-aminobiphenyl-2-yl)(chloro)palladium (1:1) (0.0022 g, 0.0028 mmol) was added. The reaction mixture was sealed with a screw cap and heated at 80° C. for 1 h. The mixture was quenched with water and extracted with EtOAc. The combined organic extracts were dried and concentrated under reduced pressure. The residue was purified by flash chromatography on a 20 g silica gel column, eluting with 0-100% EtOAc in hexanes, to give benzyl [2-[({4-[(3S,5R)-3-[(tert-butoxycarbonyl)amino]-5-(trifluoromethyl)piperidin-1-yl]pyridin-3-yl}amino)carbonyl]-7-(3,6-dihydro-2H-pyran-4-yl)quinolin-3-yl]carbamate (0.16 g, 50%, LCMS calc. for C39H42F3N6O6[M+H]+: m/z=747.3. found: 747.4) and the corresponding benzyl carbamate deprotected product, tert-butyl [(3S,5R)-1-[3-({[3-amino-7-(3,6-dihydro-2H-pyran-4-yl)quinolin-2-yl]carbonyl}amino)pyridin-4-yl]-5-(trifluoromethyl)piperidin-3-yl]carbamate (0.13 g, 50%, LCMS calc. for C31H36F3N6O4 [M+H]+: m/z=613.3. found: 613.4).

1. customThe mixture was deoxygenated with nitrogen for 10 min
2. customThe reaction mixture was sealed with a screw
3. customcap
4. customThe mixture was quenched with water
5. extractionextracted with EtOAc
6. customThe combined organic extracts were dried
7. concentrationconcentrated under reduced pressure
8. customThe residue was purified by flash chromatography on a 20 g silica gel column
9. washeluting with 0-100% EtOAc in hexanes