反应详情

Benzyl 3-(3-{1-[(tert-butoxycarbonyl)amino]ethyl}-5-chloro-2-methoxy-6-methylphenyl)azetidine-1-carboxylate (720 mg, 1.5 mmol) (second peak from chiral separation of previous step) and 5% palladium on carbon (100 mg) were combined in methanol (40 mL), to which was added 0.25 M HCl in water (11 mL, 2.8 mmol). The suspension was hydrogenated under balloon pressure of H2 at room temperature for 1 hour. The suspension was then filtered, neutralized with sat. NaHCO3 solution, concentrated, and extracted with dichloromethane. The combined organic layers were dried over MgSO4 and concentrated to give the desired product (0.4 g). LCMS calculated for C18H28ClN2O3 (M+H)+: m/z=355.2. found: 355.1.

1. filtrationThe suspension was then filtered
2. concentrationconcentrated
3. extractionextracted with dichloromethane
4. dry with materialThe combined organic layers were dried over MgSO4
5. concentrationconcentrated