Hydroxyamine hydrochloride → methyl 3-chloro-2-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-4-fluoro-5-[N-hydroxyethanimidoyl]benzoate
反応式
[C:1]([C:4]1[C:5]([F:23])=[C:6]([Cl:22])[C:7]([N:14]2[CH2:19][C@H:18]([CH3:20])[O:17][C@H:16]([CH3:21])[CH2:15]2)=[C:8]([CH:13]=1)[C:9]([O:11][CH3:12])=[O:10])(=O)[CH3:2].Cl.[NH2:25][OH:26]>CO.N1C=CC=CC=1>[Cl:22][C:6]1[C:7]([N:14]2[CH2:19][C@H:18]([CH3:20])[O:17][C@H:16]([CH3:21])[CH2:15]2)=[C:8]([CH:13]=[C:4]([C:1](=[N:25][OH:26])[CH3:2])[C:5]=1[F:23])[C:9]([O:11][CH3:12])=[O:10]参加物
4
実験手順
To a solution of methyl 5-acetyl-3-chloro-2-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-4-fluorobenzoate (Intermediate 107, 800 mg, 2.32 mmol) in methanol:Pyridine (1:1, 6 mL) was added hydroxylamine hydrochloride (223 mg, 3.48 mmol) and the mixture was stirred at room temperature for 12 hours. Solvents were removed under vacuum and the residue was subjected to silica gel column chromatography using a gradient of ethyl acetate in pet. ether to give title compound. Yield: 700 mg (87%).