N-bromobutanimide → 1-Benzyl-8-bromo-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester
반응식
[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:29])=[C:7]2[C:12](=[CH:13][N:14]=1)[N:11]([CH2:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)[C:10](=[O:22])[C:9]([C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1)=[CH:8]2)=[O:4].[Br:30]N1C(=O)CCC1=O>C(Cl)Cl>[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:29])=[C:7]2[C:12](=[C:13]([Br:30])[N:14]=1)[N:11]([CH2:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)[C:10](=[O:22])[C:9]([C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1)=[CH:8]2)=[O:4]참가 물질
4
반응물 2
생성물 1
시약·촉매·용매 1
실험 절차
A mixture of 1-benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (600 mg, 1.55 mmol) and N-bromosuccinimide (291 mg, 1.63 mmol) in CH2Cl2 (4.2 mL) was refluxed for 3 h. After the mixture was cooled to r.t., the solvent was evaporated in vacuo. The residue was purified by silica gel chromatography (0-60% EtOAc/hexanes+2% AcOH) to give 560 mg of the title compound as a yellow solid. MS: (+) m/z 464.97, 466.94 (M+H, 79/81Br)