反应详情

A slurry of palladium hydroxide on carbon (330 mg) in methanol (10 mL) was added to a solution of 1,1-dimethylethyl 4-[3-(phenylmethoxy)phenyl]-1-piperazinecarboxylate (Description 20, 3.25 g, 8.8 mmol) in ethyl acetate/methanol (1:9) and the mixture was shaken under an atmosphere of hydrogen (40 psi) for 48 h. The mixture was filtered through celite and the solvent was evaporated under reduced pressure to give the title compound (2.28 g, 93%). 1H NMR (360 MHz, CDCl3) δ1.48 (9H, s), 3.10-3.13 (4H, m), 3.54-3.57 (4H, m), 6.34 (1H, dd, J 7.9, 2.2 Hz), 6.41 (1H, t, J 2.0 Hz), 6.34 (1H, dd, J 8.3, 2.2 Hz), and 7.11 (1H, t, J 7.9 Hz).

1. filtrationThe mixture was filtered through celite
2. customthe solvent was evaporated under reduced pressure