反应详情

温度

100 °C

tert-Butyl ((4aS,5S,7aS)-7a-(5-bromo-2,4-difluorophenyl)-5-(fluoromethyl)-4a,5,7,7a-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)carbamate (100 mg, 0.21 mmol) was dissolved in DME (1.5 mL), EtOH (0.7 mL) and water (0.5 mL). The solution was heated to 100° C. Pyrimidin-5-ylboronic acid (51.5 mg, 0.416 mmol), bis(triphenylphosphine)palladium (II) chloride (29.2 mg, 0.042 mmol) and cesium carbonate (406 mg, 1.25 mmol) were added and the reaction was stirred at 100° C. for 45 minutes. The reaction was cooled to room temperature and partitioned between DCM and saturated aqueous NaHCO3. The layers were separated and the aqueous layer was extracted with DCM (×2). The organic layers were combined, dried (MgSO4) and concentrated in vacuo. The residue was purified by column chromatography (Biotage SNAP 10 g, 12 mL/min eluting with 20-80% EtOAc in n-hexane). The material was stirred in DCM (2 mL, 31.08 mmol) and TFA (2 mL) for 1 hour at room temperature. The solvents were removed in vacuo. The residue was passed over a 5 g SCX cartridge, washing with MeOH then 2N NH3/MeOH. The basic fractions were concentrated in vacuo and the residue was purified by column chromatography (Biotage SNAP 10 g, 12 mL/min gradient 0-20% MeOH in EtOAc) to leave the title compound as a white solid.

1. temperatureThe reaction was cooled to room temperature
2. custompartitioned between DCM and saturated aqueous NaHCO3
3. customThe layers were separated
4. extractionthe aqueous layer was extracted with DCM (×2)
5. dry with materialdried (MgSO4)
6. concentrationconcentrated in vacuo
7. customThe residue was purified by column chromatography (Biotage SNAP 10 g, 12 mL/min eluting with 20-80% EtOAc in n-hexane)
8. customThe solvents were removed in vacuo
9. washwashing with MeOH
10. concentrationThe basic fractions were concentrated in vacuo
11. customthe residue was purified by column chromatography (Biotage SNAP 10 g, 12 mL/min gradient 0-20% MeOH in EtOAc)