反应详情

To a solution of (S)-6-(2-fluorophenyl)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl)-1,3-oxazinan-2-one (120 mg, 0.24 mmol), 5-bromo-1-methylpyridin-2-(1H)-one (54 mg, 0.28 mmo), 2N aq Cs2CO3 (2 mL) in dioxane (8 mL) was added Pd(PPh3)2Cl2 (17 mg, 0.024 mmol) under N2. The reaction mixture was refluxed for 2 h and quenched by addition of water. The mixture was extracted with EtOAc (30 mL), and the organic layer was washed with H2O and brine, dried over Na2SO4, and filtered. The filtrate was concentrated to give the crude product, which was purified by preparative TLC and preparative HPLC to afford (S)-6-(2-fluorophenyl)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-(4-(1-methyl-6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-1,3-oxazinan-2-one (14 mg, yield: 10%). LC-MS Method 2 tR=1.2 min, m/z=473.9; 1H NMR (CDCl3): δ1.21 (s, 3H), 1.30 (s, 3H), 1.48 (d, J=7.2 Hz, 3H), 2.15-2.26 (m, 3H), 2.33 (dd, J=11.2, 26.4 Hz, 1H), 2.43-2.46 (m, 1H), 2.79-2.85 (m, 1H), 3.63 (s, 3H), 5.62 (q, J=6.8 Hz, 1H), 6.58-6.60 (m, 1H), 6.89-6.94 (m, 1H), 7.00-7.02 (m, 2H), 7.10-7.24 (m, 3H), 7.34-7.39 (m, 1H), 7.40-7.45 (m, 1H), 7.48-7.70 (m, 2H).

1. temperatureThe reaction mixture was refluxed for 2 h
2. customquenched by addition of water
3. extractionThe mixture was extracted with EtOAc (30 mL)
4. washthe organic layer was washed with H2O and brine
5. dry with materialdried over Na2SO4
6. filtrationfiltered
7. concentrationThe filtrate was concentrated
8. customto give the crude product, which
9. customwas purified by preparative TLC and preparative HPLC