反应详情

A suspension of 10% Pd/C (53% water; 0.660 g), tert-butyl 4-(4-((4-((2-(2-methoxy-2-oxoethyl)phenyl)ethynyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)benzoyl)piperazine-1-carboxylate (A23) (0.337 g, 0.540 mmol) and Et3N (1 mL) was stirred at room temperature for 16 hours under an atmosphere of hydrogen. The mixture was filtered through a pad of Celite, washing with EtOAc (80 mL). The filtrates were evaporated in vacuo affording a yellow oil which was purified by silica gel column chromatography (Biotage Isolera, 40 g SiO2 cartridge, 0-80% EtOAc in petroleum benzine 40-60° C.) to yield the title compound A24 as a pale yellow oil (0.245 g, 72%); 1H NMR (400 MHz, CDCl3) δ 8.54 (s, 1H), 8.19 (s, 1H), 7.72 (d, J=8.7 Hz, 2H), 7.41 (d, J=8.6 Hz, 2H), 7.25-7.13 (m, 4H), 3.73 (s, 2H), 3.65 (s, 3H), 3.84-3.30 (m, 8H), 3.18-3.00 (m, 4H), 1.46 (s, 9H). LCMS-A: rt 6.500 min; m/z 628 [M+H]+.

1. filtrationThe mixture was filtered through a pad of Celite
2. washwashing with EtOAc (80 mL)
3. customThe filtrates were evaporated in vacuo
4. customaffording a yellow oil which
5. customwas purified by silica gel column chromatography (Biotage Isolera, 40 g SiO2 cartridge, 0-80% EtOAc in petroleum benzine 40-60° C.)