反应详情

To the title product from Example 11 (1.1 g, 4.3 mmol) in 70 mL of anhydrous tetrahydrofuran was added 20 mL of freshly distilled liquid ammonia in a Parr shaker which was sealed and shaken at room temperature for 16 hours. After filtering and concentration, the crude residue was dissolved in anhydrous methanol and passed through a basic ion exchange resin and eluted with anhydrous methanol. Concentration afforded the title compound (780 mg) as a white solid, m.p. 83.9°-85.6° C. (DSC). The structure was supported by NMR, infrared spectroscopy, elemental analysis, and mass spectroscopy.

1. customwas sealed
2. filtrationAfter filtering
3. concentrationconcentration
4. dissolutionthe crude residue was dissolved in anhydrous methanol
5. washeluted with anhydrous methanol
6. concentrationConcentration