[CH3:1][O:2][C:3]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:4]=1[CH2:5][CH2:6][NH:7]2.Cl([O-])(=O)(=O)=O.[Mg+2].Cl([O-])(=O)(=O)=O.[O:23]1[CH:27]([C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)[CH:24]1[CH2:25][OH:26]>CC#N.C([O-])(O)=O.[Na+]>[OH:23][CH:24]([CH:27]([N:7]1[C:8]2[C:4](=[C:3]([O:2][CH3:1])[CH:11]=[CH:10][CH:9]=2)[CH2:5][CH2:6]1)[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)[CH2:25][OH:26]A solution of 1.00 g (6.62 mmol) of 4-methoxyindoline (Gangjee et al., J. Med. Chem. 1997, 40, 479-485) and 1.90 g (8.51 mmol) of magnesium perchlorate in 20 mL of CH3CN was treated in a dropwise manner with a solution of 1.00 g (6.62 mmol) of 2,3-epoxy-3-phenyl-1-propanol (Ogata and Tomizawa, Bull. Chim. Soc. Jap. 1977, 50, 261-265) in 10 mL of CH3CN. The reaction was stirred at ambient temperature for 2.5 hours and was diluted with 30 mL of saturated aqueous NaHCO3. The organic layer was separated and the aqueous phase was extracted with EtOAc (2×20 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated in vacuo. The oil was purified by radial chromatography (SiO2; 10% then 20% then 30% EtOAc in hexanes) to afford 1.55 g (5.17 mmol; 78%) of the subtitled compound as a solid.
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