[CH3:1][O:2][C:3]1[CH:11]=[C:10]2[C:6]([CH:7]=[CH:8][N:9]2[CH3:12])=[CH:5][CH:4]=1.Cl[C:14](=[O:19])[C:15]([O:17][CH3:18])=[O:16]>CCOCC>[CH3:1][O:2][C:3]1[CH:11]=[C:10]2[C:6]([C:7]([C:14](=[O:19])[C:15]([O:17][CH3:18])=[O:16])=[CH:8][N:9]2[CH3:12])=[CH:5][CH:4]=16-Methoxy-1-methyl-1H-indole (1.0 g, 6.19 mmol) was dissolved in ether (10 mL) and cooled to 0° C. Methyl chlorooxoacetate (1.17 mL, 12.4 mmol) was added dropwise. Stirring was continued at 0° C. for 6 h. The mixture was filtered and washed well with ether to give methyl (6-methoxy-1-methyl-1H-indol-3-yl)glyoxylate (621 mg, 41%).
Wird geladen…