反应详情

温度

90 °C

A mixture of 3-bromo-N-(4-(chlorodifluoromethoxy)phenyl)-4-fluorobenzamide (1 g, 2.53 mmol), (R)-pyrrolidin-3-ol (0.331 g, 3.80 mmol), TEA (0.706 mL, 5.07 mmol) and DMSO (2.53 mL) was stirred at 90° C. for 20 h. The RM was treated with 0.5 M HCl (50 mL) and extracted with EtOAc. The combined extracts were washed with 0.5 M HCl, sat. aq. NaHCO3 and brine, dried over Na2SO4 and the solvent was evaporated off under reduced pressure to give the crude product which was purified by flash chromatography (RediSep® Silica gel column, 40 g, cyclohexane/EtOAc, from 1% to 4.5% EtOAc). The fractions containing the pure product were combined and the solvent was evaporated off under reduced pressure to give a residue which was triturated under cyclohexane to yield the title product as a white amorphous solid. UPLC-MS (Condition 3) tR=1.15 min, m/z=462.9 [M+H]+, m/z=460.9 [M−H]−; 1H NMR (400 MHz, DMSO-d6) δ ppm 1.81-1.90 (m, 1H) 1.92-2.03 (m, 1H) 3.27 (dd, J=10.39, 1.10 Hz, 1H) 3.36-3.44 (m, 1H) 3.62-3.71 (m, 1H) 3.81 (dd, J=10.45, 4.71 Hz, 1H) 4.32-4.40 (m, 1H) 4.99 (d, J=3.42 Hz, 1H) 6.93 (d, J=8.80 Hz, 1H) 7.33 (d, J=9.05 Hz, 2H) 7.82-7.91 (m, 3H) 8.14 (d, J=2.20 Hz, 1H) 10.21 (s, 1H).

1. extractionextracted with EtOAc
2. washThe combined extracts were washed with 0.5 M HCl, sat. aq. NaHCO3 and brine
3. dry with materialdried over Na2SO4
4. customthe solvent was evaporated off under reduced pressure
5. customto give the crude product which
6. customwas purified by flash chromatography (RediSep® Silica gel column, 40 g, cyclohexane/EtOAc, from 1% to 4.5% EtOAc)
7. additionThe fractions containing the pure product
8. customthe solvent was evaporated off under reduced pressure
9. customto give a residue which
10. customwas triturated under cyclohexane