反应详情

温度

150 °C

A mixture of 2-amino-N-(5-bromo-pyridin-2-yl)-4-fluoro-5-(1-methyl-1H-imidazol-2-ylsulfanyl)-benzamide (346 mg, 0.82 mmol), isopropyl methylphosphinate (0.256 mL, 2.05 mmol), [1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloride (60 mg, 0.082 mmol) and 8 mL of toluene was degassed by bubbling N2 through it for 2 min, then triethylamine (0.285 mL, 2.05 mmol) and triethylsilane (0.033 mL, 0.205 mmol) were added and the mixture microwave heated at 150° C. for 10 min. The solvent was evaporated and the residue dissolved in CH2Cl2, washed with brine, dried (MgSO4) and evaporated. The residue was adsorbed to SiO2 and subjected to MPLC on a 12 g SiO2 column eluting with % EtOAc in hexanes (time): 75 (8 min), 85 (10 min), 90 (10 min), 100 (20 min), then % MeOH in EtOAc (time): 1 (10 min), 2 (10 min) to provide 60 mg (16%) of the title compound. 1H NMR (500 MHz, DMSO-do): δ 1.11 (d, 3H, J=6 Hz), 1.29 (d, 3H, J=6 Hz), 1.69 (d, 3H, J=15 Hz), 3.68 (s, 3H), 4.40 (septet, 1H, J=6 Hz), 6.60 (d, 1H, J=12 Hz), 6.90 (d, 1H, J=1 Hz), 6.98 (s, 2H), 7.27 (d, 1H, J=1 Hz), 8.02 (d, 1H, J=8 Hz), 8.12 (td, 1H, J=7, 3 Hz), 8.17 (dd, 1H, J=7, 2 Hz), 8.67 (dt, 1H, J=5, 1 Hz), 11.02 (s, 1H); LCMS (m/z): 464.1 [C20H23FN5O3PS+H]+.

1. customwas degassed
2. customby bubbling N2 through it for 2 min
3. customThe solvent was evaporated
4. dissolutionthe residue dissolved in CH2Cl2
5. washwashed with brine
6. dry with materialdried (MgSO4)
7. customevaporated
8. washeluting with % EtOAc in hexanes (time)