C(=O)([O-])[O-].[K+].[K+].[NH2:7][C:8]1[CH:13]=[CH:12][C:11]([OH:14])=[CH:10][C:9]=1[N+:15]([O-:17])=[O:16].Br[CH2:19][CH2:20][O:21][CH3:22]>CN(C=O)C>[CH3:22][O:21][CH2:20][CH2:19][O:14][C:11]1[CH:12]=[CH:13][C:8]([NH2:7])=[C:9]([N+:15]([O-:17])=[O:16])[CH:10]=1Powdered and dried Potassium carbonate (3.58 g, 0.025 mol) was added to a solution of 4-amino-3-nitrophenol (2 g, 0.012 mol) in DMF (20 mL) at 0° C. under nitrogen atmosphere. To this, 1-bromo-2-methoxyethane (1.34 mL, 0.014 mol) was added dropwise and the resultant reaction mixture was refluxed for overnight. Then, the reaction mixture was filtered through celite. The filterate was concentrated and diluted with ethyl acetate and water. The aqueous layer was separated and extracted with ethyl acetate (3×30 mL). The organic phase was washed with brine, dried on Na2SO4, filtered and concentrated under vacuum. The residue was purified by silica gel column chromatography to obtain the title compound (0.6 g, yield: 24%) as a solid. MS (ESI): 213.15 [M+H]+.
Wird geladen…
