反应详情

(R)-N-Benzyloxycarbonyl-α-[N-(t-butoxycarbonylmethyl)carbamoyl]benzylamine (Method 4; 12.8 g, 32.2 mmol) was dissolved in EtOH (99%, 200 ml) and toluene (50 ml). Pd/C (10%, 0.65 g) was added and hydrogenation was performed at atmospheric pressure for 5.5 hours at room temperature. The reaction mixture was filtered through diatomaceous earth and the solvents were evaporated to give the title compound (8.4 g, 99%). NMR (600 MHz, CDCl3): 1.45 (s, 9H), 3.93 (m, 2H), 4.54 (s, 1H), 7.31–7.42 (m, 5H), 7.51 (brs, 1H).

1. filtrationThe reaction mixture was filtered through diatomaceous earth
2. customthe solvents were evaporated