反应详情

A mixture of tert-butyl 4-(4-((tert-butoxycarbonyl)amino)-3-fluorophenyl)-5,6-dihydropyridine-1(2H)-carboxylate (I53) (0.409 g, 1.04 mmol) and 10% Pd/C (0.043 g) in EtOAc (20 mL) was stirred for 16 hours at room temperature under a H2 atmosphere. The mixture was filtered through celite and the filtrate concentrated under reduced pressure to give the title compound (I54) (0.376 g, 92%) as a white foam; 1H NMR (400 MHz, CDCl3) δ 7.09 (dd, J=8.1, 8.1 Hz, 1H), 6.95 (m, 2H), 4.25 (m, 2H), 2.79 (dd, J=12.0, 12.0 Hz, 2H), 2.65 (m, 1H), 1.82 (m, 2H), 1.43 (s, 18H).

1. filtrationThe mixture was filtered through celite
2. concentrationthe filtrate concentrated under reduced pressure