反应详情

To a solution of ethyl 3-{6-[(3-nitrobenzoyl)amino]-1H-benzimidazol-1-yl}-3-phenylpropanoate (231 mg, 504 μmol) in a mixture of ethanol and water (4:1, 10 mL), was added palladium on carbon (46 mg, 10% w/w Pd) and ammonium formate (191 mg, 3.03 mmol). The suspension was heated to reflux for 3 hours, and was then cooled to room temperature, and filtered through a pad of Celite®. The filtrate was evaporated in vacuo to afford the title compound, 1H NMR: (CD3OD), 8.43 (s, 1H), 8.14 (d, J=1.46, 1H), 7.65 (d, J=8.79, 1H), 7.47 (dd, J=8.79, 1.83, 1H), 7.30 (br, 8H), 6.92-6.90 (m, 1H), 6.11 (dd, J=9.52, 6.22, 1H), 4.04 (q, J=7.32, 2H), 3.62 (dd, J=16.11, 9.52, 1H), 3.46 (dd, J=16.11, 6.22, 1H), 1.08 (t, J=7.32, 3H).

1. temperatureThe suspension was heated
2. temperatureto reflux for 3 hours
3. filtrationfiltered through a pad of Celite®
4. customThe filtrate was evaporated in vacuo