反应详情

温度

0 °C

To a 0° C. cooled solution of cis-methyl 4-((E)-2-(4-fluorobenzoylimino)-6-(hydroxymethyl)-2,3-dihydro-1H-benzo[d]imidazol-1-yl)cyclohexanecarboxylate (1 g, 2.350 mmol) in DCM (25 mL) was added thionyl chloride (0.858 mL, 11.75 mmol) dropwise, and the reaction was stirred at 0° C. for 30 minutes. After 30 minutes, the solvent was removed at reduced pressure, and the residue was suspended in ACN (5 mL) and re-concentrated to remove residual thionyl chloride. The residue was resuspended in ACN (15 mL), cooled to 0° C., and 2-(piperidin-4-yl)propan-2-ol (1.010 g, 7.05 mmol) and TEA (0.655 mL, 4.70 mmol) were added. The reaction was stirred overnight at RT. After 16 hours, the reaction mixture was concentrated and partitioned between EtOAc and water. The organic layer was concentrated and the residual product was purified by column chromatography, eluting with 0-100% (90:9:1 DCM/MeOH/NH4OH)/DCM to provide cis-methyl 4-((E)-2-(4-fluorobenzoylimino)-6-((4-(2-hydroxypropan-2-yl)piperidin-1-yl)methyl)-2,3-dihydro-1H-benzo[d]imidazol-1-yl)cyclohexanecarboxylate as a white powder (1.05 g, 81% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.03 (s, 6H), 1.09-1.35 (m, 3H), 1.56-1.91 (m, 8H), 2.21-2.29 (m, 2H), 2.53-2.64 (m, 2H), 2.77-2.95 (m, 3H), 3.50 (s, 2H), 3.77 (s, 3H), 3.99 (s, 1H), 4.74 (br. s., 1H), 7.14 (d, J=6.9 Hz, 1H), 7.26 (dd, J=8.8 Hz, 8.8 Hz, 2H), 7.37-7.58 (m, 2H), 8.26 (dd, J=8.7, 5.9 Hz, 2H), 12.77 (s, 1H). MS, m/z (C31H39FN4O4): calcd, 550.3. found, 551.1 [M+H].

1. waitAfter 30 minutes
2. customthe solvent was removed at reduced pressure
3. concentrationre-concentrated
4. customto remove residual thionyl chloride
5. temperaturecooled to 0° C.
6. stirringThe reaction was stirred overnight at RT
7. waitAfter 16 hours
8. concentrationthe reaction mixture was concentrated
9. custompartitioned between EtOAc and water
10. concentrationThe organic layer was concentrated
11. customthe residual product was purified by column chromatography
12. washeluting with 0-100% (90:9:1 DCM/MeOH/NH4OH)/DCM