Hydrogen chloride-ethyl acetate → N-((2S)-1-((2-(4-(cyclopropylmethoxy)-3-fluorophenyl)-1,3-benzoxazol-6-yl)oxy)propan-2-yl)acetamide
反応式
[CH:1]1([CH2:4][O:5][C:6]2[CH:11]=[CH:10][C:9]([C:12]3[O:13][C:14]4[CH:20]=[C:19]([O:21][CH2:22][C@@H:23]([NH:25][C:26](=O)[O:27]C(C)(C)C)[CH3:24])[CH:18]=[CH:17][C:15]=4[N:16]=3)=[CH:8][C:7]=2[F:33])[CH2:3][CH2:2]1.Cl.[C:35](OCC)(=O)C>>[CH:1]1([CH2:4][O:5][C:6]2[CH:11]=[CH:10][C:9]([C:12]3[O:13][C:14]4[CH:20]=[C:19]([O:21][CH2:22][C@@H:23]([NH:25][C:26](=[O:27])[CH3:35])[CH3:24])[CH:18]=[CH:17][C:15]=4[N:16]=3)=[CH:8][C:7]=2[F:33])[CH2:2][CH2:3]1参加物
3
実験手順
To tert-butyl ((2S)-1-((2-(4-(cyclopropylmethoxy)-3-fluorophenyl)-1,3-benzoxazol-6-yl)oxy)propan-2-yl)carbamate (774 mg) was added 4 M hydrogen chloride/ethyl acetate (10 mL), and the mixture was stirred at room temperature for 10 min, and concentrated. To the residue were added pyridine (10 mL) and acetic anhydride (10 mL), and the mixture was stirred at room temperature for 15 min. The reaction mixture was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (NH, hexane/ethyl acetate) to give the title compound (570 mg).
後処理
- concentrationconcentrated