反应详情

LiOH (4.81 g, 114.63 mmol) was added to a stirred solution of (4-phenoxy-benzylamino)-acetic acid ethyl ester (5.72 g, 19.12 mmol) in THF:MeOH:H2O (3:1:1, 75 mL), and the resulting mixture was stirred at room temperature for 5 hrs. The MeOH and THF were evaporated, and the residue was acidified with cold 20% aqueous HCl. The resulting precipitate was filtered, washed with water and dried to afford 4.74 g (91.41% yield) of (4-phenoxy-benzoylamino)-acetic acid. 1H NMR (DMSO): δ 7.8 (d, 2H,), 7.75 (t, 1H), 7.4 (t, 2H), 7.15 (t, 1H), 7.05 (d, 2H), 7.0 (d, 2H).

1. customThe MeOH and THF were evaporated
2. filtrationThe resulting precipitate was filtered
3. washwashed with water
4. customdried