[Br:1][C:2]1[C:11]2[N:10]=[CH:9][CH:8]=[CH:7][C:6]=2[C:5]([CH:12]=O)=[CH:4][CH:3]=1.[NH2:14][OH:15]>C(O)C>[Br:1][C:2]1[C:11]2[N:10]=[CH:9][CH:8]=[CH:7][C:6]=2[C:5]([CH:12]=[N:14][OH:15])=[CH:4][CH:3]=1To a stirred solution of 8-bromo-5-quinolinecarboxaldehyde (i.e. the product from Step B) (1.7 g, 7.1 mmol) in ethanol (30 mL) was added an aqueous solution of hydroxylamine (0.7 mL, 50% in water). After stirring at room temperature for 2 h, the reaction mixture was concentrated under reduced pressure to provide the title compound as a pale yellow solid (1.8 g).
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