反应详情

[Benzyl-(3-methoxy-benzyl)-amino]-acetic acid ethyl ester (3.0 g, 9.6 mmol) in ethanol (100 mL) was treated with 4N NaOH (20 mL) and the mixture was stirred at ambient temperature for two hours whereupon HPLC analysis showed completion of the reaction. The ethanol was removed on the rotary evaporator, water (˜20 mL) was added to dissolve solids, the pH was adjusted to 4 (6N HCl) with stirring and the precipitate was collected by filtration, washed with water and dried to constant weight in vacuo to give 2.47 g (90%) of [benzyl-(3-methoxy-benzyl)-amino]-acetic acid as a white solid; 1H NMR (400 MHz, DMSO-d6) δ 12.30 (br s, 1H), 7.35 (m, 4H), 7.25 (m, 2H), 6.93 (m, 2H), 6.82 (d, J=9 Hz, 1H), 3.74 (s, 3H), 3.72 (s, 2H), 3.30 (br s, 2H, 3.17 (s, 2H); MS (m/e) 286 (M+1); mp 177-179° C.

1. customcompletion of the reaction
2. customThe ethanol was removed on the rotary evaporator, water (˜20 mL)
3. additionwas added
4. dissolutionto dissolve solids
5. stirringwith stirring
6. filtrationthe precipitate was collected by filtration
7. washwashed with water
8. customdried to constant weight in vacuo