反应详情

The product of Example 68B (14.4 g, 49.1 mmol) and 7 M ammonia in methanol (150 mL) were added to solvent-washed Raney®-nickel (72.0 g, 1227 mmol), and the mixture was stirred at room temperature for 24 hours under hydrogen (30 pounds per square inch). The mixture was filtered through a nylon membrane. The reaction mixture was concentrated. The residue was dissolved in dichloromethane/methanol (1:1) and filtered through a pad of diatomaceous earth to remove a greenish residue. The filtrate was concentrated to obtain a solid which was slurried in methanol, filtered, and dried to obtain the title compound. MS (DCI+) m/z 251 (M+H)+.

1. filtrationThe mixture was filtered through a nylon membrane
2. concentrationThe reaction mixture was concentrated
3. dissolutionThe residue was dissolved in dichloromethane/methanol (1:1)
4. filtrationfiltered through a pad of diatomaceous earth
5. customto remove a greenish residue
6. concentrationThe filtrate was concentrated
7. customto obtain a solid which
8. filtrationfiltered
9. customdried