[OH:1][C:2]1[CH:10]=[C:9]2[C:5]([CH2:6][CH2:7][C:8]2=[O:11])=[CH:4][CH:3]=1.Br[CH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C.CCOC(C)=O>[CH2:13]([O:1][C:2]1[CH:10]=[C:9]2[C:5]([CH2:6][CH2:7][C:8]2=[O:11])=[CH:4][CH:3]=1)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1A mixture of 6-hydroxy-2,3-dihydroinden-1-one (available from Aldrich) (5.0 g, 34 mmol), 1-(bromomethyl)benzene (1.1) (available from Aldrich) (4.4 mL, 37 mmol) and cesium carbonate (25 g, 78 mmol) in DMF were stirred at room temperature for 23 hours. The reaction mixture was diluted with EtOAc (400 mL). The mixture was washed with brine and dried over anhydrous sodium sulfate. After removing solvent by rotary evaporation, the residue was purified by column chromatography (1:4 EtOAc/hexane). Product 1.2 was obtained in 67% yield as a white solid.
読み込み中…
