反应详情

温度

95 °C

A solution of 4-{5-[(4-fluorophenyl)methyl]-6-methylpyrimidin-4-yl}-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3,4,5-tetrahydro-1,4-benzoxazepine (0.10 g, 0.21 mmol), 2-amino-5-bromopyrazine (40 mg, 0.21 mmol) and potassium carbonate (0.12 g, 0.84 mmol) in N,N-dimethylformamide (5 mL), and water (0.5 mL) was degassed by bubbling nitrogen gas for five minutes followed by the addition of [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (15 mg, 0.021 mmol), then stirred at 95° C. for 16 hours. After cooling to room temperature the reaction mixture was partitioned between ethyl acetate (50 mL) and brine (30 mL). The organic layer was separated, washed with brine, dried over sodium sulfate then filtered and concentrated. Purification by preparative reverse phase HPLC (0.1% aqueous ammonium acetate-acetonitrile) provided 5-(4-{5-[(4-fluorophenyl)methyl]-6-methylpyrimidin-4-yl}-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)pyrazin-2-amine (18 mg, 20%). 1H NMR (400 MHz, d6-DMSO): 8.80 (s, 1H), 8.38 (s, 1H), 7.96 (s, 1H), 7.72 (d, 1H), 7.50 (br s, 1H), 7.25-7.14 (m, 4H), 6.93 (d, 1H), 4.90 (s, 2H), 4.32 (m, 2H), 4.00 (m, 4H), 2.22 (s, 3H). MS (EI) for C25H23FNO6: 443 (MH+).

1. customby bubbling nitrogen gas for five minutes
2. temperatureAfter cooling to room temperature the reaction mixture
3. customwas partitioned between ethyl acetate (50 mL) and brine (30 mL)
4. customThe organic layer was separated
5. washwashed with brine
6. dry with materialdried over sodium sulfate
7. filtrationthen filtered
8. concentrationconcentrated
9. customPurification by preparative reverse phase HPLC (0.1% aqueous ammonium acetate-acetonitrile)