Tetrabutylammonium Fluoride → 5-Chloro-3-phenyl-7-nitro-1H-indole

反応式

[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([N+:11]([O-:13])=[O:12])[CH:10]=1)[NH:7][C:6]([Si](C)(C)C)=[C:5]2[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>O1CCCC1.O>[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([N+:11]([O-:13])=[O:12])[CH:10]=1)[NH:7][CH:6]=[C:5]2[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

参加物

実験手順

5-Chloro-7-nitro-3-phenyl-2-trimethylsilyl-1H-indole (1.5 g, 4.35 mmol) prepared in Step A was dissolved in tetrahydrofuran (30 mL), and tetrabutylammonium fluoride 1M solution (5.2 mL, 5.2 mmol) was added in drops thereto at 0° C. After completion of the reaction, the reaction mixture was diluted with water, extracted with ethyl acetate, washed with saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and filtered. The solvent was removed under reduced pressure, and the residue was purified by column chromatography to give the title compound (1.2 g, Yield 100%)