[N+:1]([C:4]1[CH:5]=[C:6]([CH2:10][CH2:11][CH2:12]O)[CH:7]=[CH:8][CH:9]=1)([O-:3])=[O:2].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[Br:33]N1C(=O)CCC1=O>C(Cl)Cl>[Br:33][CH2:12][CH2:11][CH2:10][C:6]1[CH:7]=[CH:8][CH:9]=[C:4]([N+:1]([O-:3])=[O:2])[CH:5]=1Compound 95-1 (220 mg) was dissolved in methylene chloride (10 ml), triphenylphosphine (350 mg) and N-bromosuccinimide (238 mg) were added under ice-cooling, and the mixture was stirred under ice-cooling for 1 hr, and at room temperature for 12 hr. The reaction mixture was washed with water and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. Diethyl ether (30 ml) was added, and the precipitated triphenylphosphine oxide was filtered off. The concentrate of the filtrate was purified by silica gel column chromatography to give the object product (280 mg) as a colorless oil.
Wird geladen…
