反应详情

To a stirred suspension of N-[2-benzyloxy-5-(2-dibenzylamino-1-hydroxy-ethyl)-phenyl]-methanesulfonamide (1.03 g, 2 mmol) and 10% Pd/C (0.4 g) in methanol (100 mL) at room temperature is added anhydrous HCO2NH4 (1.26 g, 20 mmol) under a nitrogen atmosphere. The resulting mixture is refluxed for 2 hours. After cooling to room temperature the catalyst is removed by filtration through a celite pad and washed with methanol. The filtrate is evaporated under reduced pressure to give the titled compound as a pale yellowish solid; 1H NMR (300 MHz, DMSO-d6) δ 2.62 (dd, J=12.6, 8.7 Hz, 1 H), 2.75 (dd, J=12.6, 3.7 Hz, 1 H), 2.90 (s, 3 H), 4.47 (dd, J=8.7, 3.7 Hz, 1 H), 6.84 (d, J=9.1 Hz, 1 H), 6.96 (dd, J=9.1, 2.0 Hz, 1 H), 7.16 (d, J=2.1 Hz, 1 H), 8.44 (s, 1 H); MS (ES) m/z: 246.7 (M++H); HRMS Calcd. for C9H14N2O4S(M+): 246.0674. Found: 246.0672.

1. additionis added anhydrous HCO2NH4 (1.26 g, 20 mmol) under a nitrogen atmosphere
2. temperatureThe resulting mixture is refluxed for 2 hours
3. customis removed by filtration through a celite pad
4. washwashed with methanol
5. customThe filtrate is evaporated under reduced pressure