Br[C:2]1[CH:7]=[C:6]([Br:8])[CH:5]=[CH:4][C:3]=1[N+:9]([O-:11])=[O:10].[CH3:12][O:13][CH2:14][CH2:15][CH2:16][NH2:17]>>[Br:8][C:6]1[CH:5]=[CH:4][C:3]([N+:9]([O-:11])=[O:10])=[C:2]([NH:17][CH2:16][CH2:15][CH2:14][O:13][CH3:12])[CH:7]=1A solution of 26.49 g of 2,4-dibromo-1-nitrobenzene [51686-78-3] and 70 ml of 3-methoxypropylamine is stirred at room temperature for 4 hours and subsequently left to stand at 3° C. for 2 days. The reaction mixture is concentrated by evaporation. The title compound is obtained as a yellow oil from the residue by means of flash chromatography (SiO2 60F). Rf=(1:3 EtOAc-heptane). Rt=4.99 (gradient I).
読み込み中…