反应详情

tert-Butyl 3-(4-((4-((2-(2-methoxy-2-oxoethyl)phenyl)ethynyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperidine-1-carboxylate (I25) (0.302 g, 0.508 mmol) was dissolved in EtOAc (12 mL) and absolute ethanol (8 mL) under an atmosphere of nitrogen. 10% Pd/C (0.250 g) in EtOAc (4 mL) was added to the solution and the atmosphere was changed to hydrogen gas (balloon). The reaction was sealed with a balloon and stirred at room temperature for 18 hours after which the catalyst was removed by filtration through Celite and the solvent was removed in vacuo. The resulting solid was again dissolved in EtOAc (12 mL) and absolute ethanol (8 mL) under an atmosphere of nitrogen and 10% Pd/C (0.250 g) in EtOAc (4 mL) was added to the solution and the atmosphere was changed to hydrogen gas (balloon). The reaction was sealed with a balloon and stirred at room temperature for 24 hours. The catalyst was removed by filtration through Celite, which was washed with EtOAc (7×10 mL) and the solvent was removed in vacuo to give a pale yellow viscous oil. The crude product was purified by silica gel chromatography (Biotage Isolera, 40 g Si Cartridge, 0-50% EtOAc in petroleum benzine 40-60° C.) to give the title compound (I26) (0.249 g, 82% yield) as a pale yellow viscous oil; 1H NMR (400 MHz, d5-DMSO) δ 10.18 (s, 1H), 8.67 (s, 1H), 7.72-7.64 (m, 2H), 7.26-7.16 (m, 6H), 4.02-3.89 (m, 2H), 3.76 (s, 2H), 3.57 (s, 3H), 3.10-2.95 (m, 4H), 2.91-2.66 (m, 2H), 2.61-2.51 (m, 1H), 1.88 (d, J=11.8 Hz, 1H), 1.75-1.54 (m, 2H), 1.43 (m, 10H). LCMS Method C: rt 7.11 min; m/z 599.3 [M+H]+.

1. customThe reaction was sealed with a balloon
2. customwas removed by filtration through Celite
3. customthe solvent was removed in vacuo
4. dissolutionThe resulting solid was again dissolved in EtOAc (12 mL)
5. additionabsolute ethanol (8 mL) under an atmosphere of nitrogen and 10% Pd/C (0.250 g) in EtOAc (4 mL) was added to the solution
6. customThe reaction was sealed with a balloon
7. stirringstirred at room temperature for 24 hours
8. customThe catalyst was removed by filtration through Celite, which
9. washwas washed with EtOAc (7×10 mL)
10. customthe solvent was removed in vacuo
11. customto give a pale yellow viscous oil
12. customThe crude product was purified by silica gel chromatography (Biotage Isolera, 40 g Si Cartridge, 0-50% EtOAc in petroleum benzine 40-60° C.)