5-Chloro-2-methoxy-3-nitropyridine → 5-Chloro-2-methoxypyridin-3-amine
Reaktionsgleichung
[Cl:1][C:2]1[CH:3]=[C:4]([N+:10]([O-])=O)[C:5]([O:8][CH3:9])=[N:6][CH:7]=1>[Pt].C(OCC)(=O)C.[Br-].[Zn+2].[Br-]>[Cl:1][C:2]1[CH:3]=[C:4]([NH2:10])[C:5]([O:8][CH3:9])=[N:6][CH:7]=1Komponenten
5
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 3
Versuchsvorschrift
Zinc bromide (226 mg, 1 mmol) and platinum on carbon (5%, 491 mg, 2.52 mmol) were added to a solution of 5-chloro-2-methoxy-3-nitropyridine (Preparation 23a, 950 mg, 5.04 mmol) in ethyl acetate (15 mL) and the reaction mixture was stirred at ambient temperature for 5 hours under a hydrogen atmosphere. The mixture was then filtered through Celite® and the filter cake was washed with methanol. The combined filtrate and washings were concentrated to give the title compound (820 mg, 100%) as a white solid.