[C:1]([NH:4][C:5]1[CH:6]=[C:7]2[C:11](=[CH:12][CH:13]=1)[CH2:10][CH:9]([NH:14][C:15](=[O:17])[CH3:16])[CH2:8]2)(=[O:3])[CH3:2].[Br:18]Br>C(O)(=O)C>[C:1]([NH:4][C:5]1[CH:6]=[C:7]2[C:11](=[CH:12][C:13]=1[Br:18])[CH2:10][CH:9]([NH:14][C:15](=[O:17])[CH3:16])[CH2:8]2)(=[O:3])[CH3:2]A solution of N-(5-acetylamino-indan-2-yl)-acetamide (9.8 g, 42 mmol) and bromine (8.5 g, 53 mmol) in acetic acid (200 mL) was stirred at room temperature for 3 h. After evaporation of the solvent, the syrupy residue was dissolved in ether and washed with water. The organic layer was washed with aqueous sodium bisulfite and dried over magnesium sulfate. The solvent was concentrated and the resulting solid collected by filtration (10 g, 77% yield).
Wird geladen…